From 6386161402826570edefda62c94b50ed2581d016 Mon Sep 17 00:00:00 2001
From: prosolis <5590409+prosolis@users.noreply.github.com>
Date: Thu, 14 May 2026 22:06:22 -0700
Subject: [PATCH] =?UTF-8?q?UX=20S6:=20race=20truth-up=20=E2=80=94=20wire?=
 =?UTF-8?q?=20Tiefling=20fire=20resist=20+=20best-fit=20hints?=
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R22: replace race copy that promised mechanics the engine doesn't deliver.
- Tiefling: wire FireResist as a CombatModifier. Enemy main attack is
  halved when monster is FireAttacker-tagged; aoe_fire abilities are
  halved unconditionally; fire-tagged traps deal half damage to Tieflings.
  DnDMonsterTemplate carries FireAttacker; toCombatStats propagates it.
  Hand-authored fire entries tagged in dnd_bestiary.go (flameskull,
  magmin, azer, salamander, fire_elemental, emberlord_thyrak,
  young_red_dragon, infernax, belaxath).
- Open5e tuned generator derives FireAttacker from the highest-AvgDamage
  attack's DamageType (threshold AvgDamage>=5). 19 tuned monsters tag.
  Regenerated bestiary_tuned_data.go.
- Elf: drop "immune to sleep" (no sleep mechanic); reframe as keen
  senses + trance flavor.
- Half-Elf: drop "two bonus skill proficiencies" (no skill system);
  reframe as adaptable cross-cultural know-how.
- Tiefling copy: drop "bonus on CHA checks" (no checks); keep fire
  resistance with flavor framing.

R23: DnDRaceInfo grows a BestFit field; renderRaceMenu emits an
"_best with: …_" hint per race so spiky stat spreads (Orc -1/-1/-1)
read as specialist picks rather than a brick of penalties.

R24: dnd.go header comment for the caster classes now reflects the
shipped state (Playable=true, spell lists populated) instead of the
pre-Open5e scaffold language.

Tests: TestApplyRacePassives gains a FireResist column; new
TestTieflingFireResistance asserts ~0.5x ratio over a 300-trial sweep
against a FireAttacker enemy. Full suite green.
---
 cmd/open5e-import/tuned.go             | 68 ++++++++++++++++---------
 internal/plugin/bestiary_tuned_data.go | 38 +++++++-------
 internal/plugin/combat_engine.go       | 25 +++++++++
 internal/plugin/dnd.go                 | 29 ++++++-----
 internal/plugin/dnd_bestiary.go        | 16 ++++++
 internal/plugin/dnd_passives.go        | 12 +++--
 internal/plugin/dnd_round1_test.go     | 70 ++++++++++++++++++++++----
 internal/plugin/dnd_setup.go           |  3 ++
 internal/plugin/dnd_zone_combat.go     |  4 ++
 9 files changed, 198 insertions(+), 67 deletions(-)

diff --git a/cmd/open5e-import/tuned.go b/cmd/open5e-import/tuned.go
index 22bb2a5..fb79498 100644
--- a/cmd/open5e-import/tuned.go
+++ b/cmd/open5e-import/tuned.go
@@ -67,16 +67,17 @@ func genTuned() error {
 // genTunedMonster mirrors plugin.DnDMonsterTemplate. Ability is nil when none
 // of the creature's SRD traits map onto an engine effect.
 type genTunedMonster struct {
-	ID, Name    string
-	CR          float64
-	HP, AC      int
-	Attack      int
-	AttackBonus int
-	Speed       int
-	BlockRate   float64
-	XPValue     int
-	Ability     *genMonsterAbility
-	Notes       string
+	ID, Name     string
+	CR           float64
+	HP, AC       int
+	Attack       int
+	AttackBonus  int
+	Speed        int
+	BlockRate    float64
+	XPValue      int
+	Ability      *genMonsterAbility
+	Notes        string
+	FireAttacker bool
 }
 
 // genMonsterAbility mirrors plugin.MonsterAbility.
@@ -95,21 +96,38 @@ func tuneMonster(b genStatBlock) genTunedMonster {
 	}
 	ability := abilityFromTraits(b.Traits)
 	return genTunedMonster{
-		ID:          b.Slug,
-		Name:        stripNameParenthetical(b.Name),
-		CR:          b.CR,
-		HP:          b.HP,
-		AC:          ac,
-		Attack:      attackByCR(b.CR),
-		AttackBonus: primaryAttackBonus(b.Attacks),
-		Speed:       tunedSpeed(b.SpeedWalk),
-		BlockRate:   tunedBlockRate(ac),
-		XPValue:     b.XP,
-		Ability:     ability,
-		Notes:       tunedNotes(b, ability),
+		ID:           b.Slug,
+		Name:         stripNameParenthetical(b.Name),
+		CR:           b.CR,
+		HP:           b.HP,
+		AC:           ac,
+		Attack:       attackByCR(b.CR),
+		AttackBonus:  primaryAttackBonus(b.Attacks),
+		Speed:        tunedSpeed(b.SpeedWalk),
+		BlockRate:    tunedBlockRate(ac),
+		XPValue:      b.XP,
+		Ability:      ability,
+		Notes:        tunedNotes(b, ability),
+		FireAttacker: isFireAttacker(b.Attacks),
 	}
 }
 
+// isFireAttacker returns true when a monster's signature damage is fire —
+// i.e., its highest-average-damage attack deals fire. Threshold at AvgDamage
+// >= 5 so a trivial fire fleck on an otherwise physical creature doesn't tag
+// the whole bestiary entry. Tieflings (FireResist) take half damage from the
+// primary attack of any creature flagged here.
+func isFireAttacker(attacks []genStatAttack) bool {
+	bestAvg, bestType := 0, ""
+	for _, a := range attacks {
+		if a.AvgDamage > bestAvg {
+			bestAvg = a.AvgDamage
+			bestType = a.DamageType
+		}
+	}
+	return bestType == "fire" && bestAvg >= 5
+}
+
 // stripNameParenthetical drops a trailing "(…)" qualifier from a monster
 // name so the player-facing display reads "Giant Rat" rather than "Giant Rat
 // (Diseased)". The slug still carries the variant, so the engine keeps both
@@ -345,7 +363,11 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 				strconv.FormatFloat(m.Ability.ProcChance, 'g', -1, 64),
 				m.Ability.Effect)
 		}
-		fmt.Fprintf(&b, "Notes: %q},\n", m.Notes)
+		fmt.Fprintf(&b, "Notes: %q", m.Notes)
+		if m.FireAttacker {
+			b.WriteString(", FireAttacker: true")
+		}
+		b.WriteString("},\n")
 	}
 	b.WriteString("\t}\n}\n")
 	return b.Bytes()
diff --git a/internal/plugin/bestiary_tuned_data.go b/internal/plugin/bestiary_tuned_data.go
index ea9fb18..a74301b 100644
--- a/internal/plugin/bestiary_tuned_data.go
+++ b/internal/plugin/bestiary_tuned_data.go
@@ -110,7 +110,7 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"ice_mephit": {ID: "ice_mephit", Name: "Ice Mephit", CR: 0.5, HP: 21, AC: 11, Attack: 2, AttackBonus: 3, Speed: 12, BlockRate: 0, XPValue: 100, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Traits: Death Burst, False Appearance, Innate Spellcasting (1/Day)"},
 		"lizardfolk": {ID: "lizardfolk", Name: "Lizardfolk", CR: 0.5, HP: 22, AC: 15, Attack: 2, AttackBonus: 4, Speed: 12, BlockRate: 0.1, XPValue: 100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The lizardfolk makes two melee attacks, each one with a different weapon. Traits: Hold Breath"},
 		"magma_mephit": {ID: "magma_mephit", Name: "Magma Mephit", CR: 0.5, HP: 22, AC: 11, Attack: 2, AttackBonus: 3, Speed: 12, BlockRate: 0, XPValue: 100, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Traits: Death Burst, False Appearance, Innate Spellcasting (1/Day)"},
-		"magmin": {ID: "magmin", Name: "Magmin", CR: 0.5, HP: 9, AC: 14, Attack: 2, AttackBonus: 4, Speed: 12, BlockRate: 0.05, XPValue: 100, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Traits: Death Burst, Ignited Illumination"},
+		"magmin": {ID: "magmin", Name: "Magmin", CR: 0.5, HP: 9, AC: 14, Attack: 2, AttackBonus: 4, Speed: 12, BlockRate: 0.05, XPValue: 100, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Traits: Death Burst, Ignited Illumination", FireAttacker: true},
 		"orc": {ID: "orc", Name: "Orc", CR: 0.5, HP: 15, AC: 13, Attack: 2, AttackBonus: 5, Speed: 12, BlockRate: 0.05, XPValue: 100, Ability: &MonsterAbility{Name: "Frenzy", Phase: "any", ProcChance: 0.4, Effect: "enrage"}, Notes: "SRD-tuned baseline — Frenzy (enrage) wired from traits. Traits: Aggressive"},
 		"reef_shark": {ID: "reef_shark", Name: "Reef Shark", CR: 0.5, HP: 22, AC: 12, Attack: 2, AttackBonus: 4, Speed: 16, BlockRate: 0, XPValue: 100, Ability: &MonsterAbility{Name: "Pack Tactics", Phase: "any", ProcChance: 0.3, Effect: "advantage"}, Notes: "SRD-tuned baseline — Pack Tactics (advantage) wired from traits. Traits: Pack Tactics, Water Breathing"},
 		"rust_monster": {ID: "rust_monster", Name: "Rust Monster", CR: 0.5, HP: 27, AC: 14, Attack: 2, AttackBonus: 3, Speed: 16, BlockRate: 0.05, XPValue: 100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Traits: Iron Scent, Rust Metal"},
@@ -128,7 +128,7 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"warhorse_skeleton": {ID: "warhorse_skeleton", Name: "Warhorse Skeleton", CR: 0.5, HP: 22, AC: 13, Attack: 2, AttackBonus: 6, Speed: 18, BlockRate: 0.05, XPValue: 100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat)."},
 		"worg": {ID: "worg", Name: "Worg", CR: 0.5, HP: 26, AC: 13, Attack: 2, AttackBonus: 5, Speed: 18, BlockRate: 0.05, XPValue: 100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Traits: Keen Hearing and Smell"},
 		"animated_armor": {ID: "animated_armor", Name: "Animated Armor", CR: 1, HP: 33, AC: 18, Attack: 2, AttackBonus: 4, Speed: 10, BlockRate: 0.15, XPValue: 200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The armor makes two melee attacks. Traits: Antimagic Susceptibility, False Appearance"},
-		"brass_dragon_wyrmling": {ID: "brass_dragon_wyrmling", Name: "Brass Dragon Wyrmling", CR: 1, HP: 16, AC: 16, Attack: 2, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat)."},
+		"brass_dragon_wyrmling": {ID: "brass_dragon_wyrmling", Name: "Brass Dragon Wyrmling", CR: 1, HP: 16, AC: 16, Attack: 2, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat).", FireAttacker: true},
 		"brown_bear": {ID: "brown_bear", Name: "Brown Bear", CR: 1, HP: 34, AC: 11, Attack: 2, AttackBonus: 5, Speed: 16, BlockRate: 0, XPValue: 200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The bear makes two attacks: one with its bite and one with its claws. Traits: Keen Smell"},
 		"bugbear": {ID: "bugbear", Name: "Bugbear", CR: 1, HP: 27, AC: 16, Attack: 2, AttackBonus: 4, Speed: 12, BlockRate: 0.1, XPValue: 200, Ability: &MonsterAbility{Name: "Surprise Attack", Phase: "opening", ProcChance: 0.8, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Surprise Attack (bonus_damage) wired from traits. Traits: Brute, Surprise Attack"},
 		"copper_dragon_wyrmling": {ID: "copper_dragon_wyrmling", Name: "Copper Dragon Wyrmling", CR: 1, HP: 22, AC: 16, Attack: 2, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat)."},
@@ -198,9 +198,9 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"blue_dragon_wyrmling": {ID: "blue_dragon_wyrmling", Name: "Blue Dragon Wyrmling", CR: 3, HP: 52, AC: 17, Attack: 6, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat)."},
 		"doppelganger": {ID: "doppelganger", Name: "Doppelganger", CR: 3, HP: 52, AC: 14, Attack: 6, AttackBonus: 6, Speed: 12, BlockRate: 0.05, XPValue: 700, Ability: &MonsterAbility{Name: "Surprise Attack", Phase: "opening", ProcChance: 0.8, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Surprise Attack (bonus_damage) wired from traits. Multiattack: The doppelganger makes two melee attacks. Traits: Shapechanger, Ambusher, Surprise Attack"},
 		"giant_scorpion": {ID: "giant_scorpion", Name: "Giant Scorpion", CR: 3, HP: 52, AC: 15, Attack: 6, AttackBonus: 4, Speed: 16, BlockRate: 0.1, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The scorpion makes three attacks: two with its claws and one with its sting."},
-		"gold_dragon_wyrmling": {ID: "gold_dragon_wyrmling", Name: "Gold Dragon Wyrmling", CR: 3, HP: 60, AC: 17, Attack: 6, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Traits: Amphibious"},
+		"gold_dragon_wyrmling": {ID: "gold_dragon_wyrmling", Name: "Gold Dragon Wyrmling", CR: 3, HP: 60, AC: 17, Attack: 6, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Traits: Amphibious", FireAttacker: true},
 		"green_hag": {ID: "green_hag", Name: "Green Hag", CR: 3, HP: 82, AC: 17, Attack: 6, AttackBonus: 6, Speed: 12, BlockRate: 0.1, XPValue: 700, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Traits: Amphibious, Innate Spellcasting, Mimicry, Hag Coven, Shared Spellcasting (Coven Only), Hag Eye (Coven Only)"},
-		"hell_hound": {ID: "hell_hound", Name: "Hell Hound", CR: 3, HP: 45, AC: 15, Attack: 6, AttackBonus: 0, Speed: 18, BlockRate: 0.1, XPValue: 700, Ability: &MonsterAbility{Name: "Pack Tactics", Phase: "any", ProcChance: 0.3, Effect: "advantage"}, Notes: "SRD-tuned baseline — Pack Tactics (advantage) wired from traits. Traits: Keen Hearing and Smell, Pack Tactics"},
+		"hell_hound": {ID: "hell_hound", Name: "Hell Hound", CR: 3, HP: 45, AC: 15, Attack: 6, AttackBonus: 0, Speed: 18, BlockRate: 0.1, XPValue: 700, Ability: &MonsterAbility{Name: "Pack Tactics", Phase: "any", ProcChance: 0.3, Effect: "advantage"}, Notes: "SRD-tuned baseline — Pack Tactics (advantage) wired from traits. Traits: Keen Hearing and Smell, Pack Tactics", FireAttacker: true},
 		"killer_whale": {ID: "killer_whale", Name: "Killer Whale", CR: 3, HP: 90, AC: 12, Attack: 6, AttackBonus: 0, Speed: 18, BlockRate: 0, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Traits: Echolocation, Hold Breath, Keen Hearing"},
 		"knight": {ID: "knight", Name: "Knight", CR: 3, HP: 52, AC: 18, Attack: 6, AttackBonus: 5, Speed: 12, BlockRate: 0.15, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The knight makes two melee attacks. Traits: Brave"},
 		"manticore": {ID: "manticore", Name: "Manticore", CR: 3, HP: 68, AC: 14, Attack: 6, AttackBonus: 5, Speed: 12, BlockRate: 0.05, XPValue: 700, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The manticore makes three attacks: one with its bite and two with its claws or three with its tail spikes. Traits: Tail Spike Regrowth"},
@@ -220,7 +220,7 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"ettin": {ID: "ettin", Name: "Ettin", CR: 4, HP: 85, AC: 12, Attack: 7, AttackBonus: 7, Speed: 16, BlockRate: 0, XPValue: 1100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The ettin makes two attacks: one with its battleaxe and one with its morningstar. Traits: Two Heads, Wakeful"},
 		"ghost": {ID: "ghost", Name: "Ghost", CR: 4, HP: 45, AC: 11, Attack: 7, AttackBonus: 5, Speed: 16, BlockRate: 0, XPValue: 1100, Ability: &MonsterAbility{Name: "Evasive", Phase: "any", ProcChance: 0.3, Effect: "evade"}, Notes: "SRD-tuned baseline — Evasive (evade) wired from traits. Traits: Ethereal Sight, Incorporeal Movement"},
 		"lamia": {ID: "lamia", Name: "Lamia", CR: 4, HP: 97, AC: 13, Attack: 7, AttackBonus: 5, Speed: 12, BlockRate: 0.05, XPValue: 1100, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The lamia makes two attacks: one with its claws and one with its dagger or Intoxicating Touch. Traits: Innate Spellcasting"},
-		"red_dragon_wyrmling": {ID: "red_dragon_wyrmling", Name: "Red Dragon Wyrmling", CR: 4, HP: 75, AC: 17, Attack: 7, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 1100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat)."},
+		"red_dragon_wyrmling": {ID: "red_dragon_wyrmling", Name: "Red Dragon Wyrmling", CR: 4, HP: 75, AC: 17, Attack: 7, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 1100, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat).", FireAttacker: true},
 		"succubusincubus": {ID: "succubusincubus", Name: "Succubus/Incubus", CR: 4, HP: 66, AC: 15, Attack: 7, AttackBonus: 0, Speed: 12, BlockRate: 0.1, XPValue: 1100, Ability: &MonsterAbility{Name: "Evasive", Phase: "any", ProcChance: 0.3, Effect: "evade"}, Notes: "SRD-tuned baseline — Evasive (evade) wired from traits. Traits: Telepathic Bond, Shapechanger"},
 		"wereboar": {ID: "wereboar", Name: "Wereboar", CR: 4, HP: 78, AC: 10, Attack: 7, AttackBonus: 5, Speed: 12, BlockRate: 0, XPValue: 1100, Ability: &MonsterAbility{Name: "Charge", Phase: "opening", ProcChance: 0.4, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Charge (bonus_damage) wired from traits. Traits: Shapechanger, Charge (Boar or Hybrid Form Only), Relentless (Recharges after a Short or Long Rest)"},
 		"weretiger": {ID: "weretiger", Name: "Weretiger", CR: 4, HP: 120, AC: 12, Attack: 7, AttackBonus: 5, Speed: 12, BlockRate: 0, XPValue: 1100, Ability: &MonsterAbility{Name: "Charge", Phase: "opening", ProcChance: 0.4, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Charge (bonus_damage) wired from traits. Traits: Shapechanger, Keen Hearing and Smell, Pounce (Tiger or Hybrid Form Only)"},
@@ -228,13 +228,13 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"barbed_devil": {ID: "barbed_devil", Name: "Barbed Devil", CR: 5, HP: 110, AC: 15, Attack: 8, AttackBonus: 6, Speed: 12, BlockRate: 0.1, XPValue: 1800, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The devil makes three melee attacks: one with its tail and two with its claws. Traits: Barbed Hide, Devil's Sight, Magic Resistance"},
 		"bulette": {ID: "bulette", Name: "Bulette", CR: 5, HP: 94, AC: 17, Attack: 8, AttackBonus: 7, Speed: 16, BlockRate: 0.1, XPValue: 1800, Ability: &MonsterAbility{Name: "Charge", Phase: "opening", ProcChance: 0.4, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Charge (bonus_damage) wired from traits. Traits: Standing Leap"},
 		"earth_elemental": {ID: "earth_elemental", Name: "Earth Elemental", CR: 5, HP: 126, AC: 17, Attack: 8, AttackBonus: 8, Speed: 12, BlockRate: 0.1, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The elemental makes two slam attacks. Traits: Earth Glide, Siege Monster"},
-		"fire_elemental": {ID: "fire_elemental", Name: "Fire Elemental", CR: 5, HP: 102, AC: 13, Attack: 8, AttackBonus: 6, Speed: 18, BlockRate: 0.05, XPValue: 1800, Ability: &MonsterAbility{Name: "Damaging Aura", Phase: "any", ProcChance: 0.4, Effect: "retaliate"}, Notes: "SRD-tuned baseline — Damaging Aura (retaliate) wired from traits. Multiattack: The elemental makes two touch attacks. Traits: Fire Form, Illumination, Water Susceptibility"},
+		"fire_elemental": {ID: "fire_elemental", Name: "Fire Elemental", CR: 5, HP: 102, AC: 13, Attack: 8, AttackBonus: 6, Speed: 18, BlockRate: 0.05, XPValue: 1800, Ability: &MonsterAbility{Name: "Damaging Aura", Phase: "any", ProcChance: 0.4, Effect: "retaliate"}, Notes: "SRD-tuned baseline — Damaging Aura (retaliate) wired from traits. Multiattack: The elemental makes two touch attacks. Traits: Fire Form, Illumination, Water Susceptibility", FireAttacker: true},
 		"flesh_golem": {ID: "flesh_golem", Name: "Flesh Golem", CR: 5, HP: 93, AC: 10, Attack: 8, AttackBonus: 7, Speed: 12, BlockRate: 0, XPValue: 1800, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The golem makes two slam attacks. Traits: Berserk, Aversion of Fire, Immutable Form, Lightning Absorption, Magic Resistance, Magic Weapons"},
 		"giant_crocodile": {ID: "giant_crocodile", Name: "Giant Crocodile", CR: 5, HP: 85, AC: 14, Attack: 8, AttackBonus: 8, Speed: 12, BlockRate: 0.05, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The crocodile makes two attacks: one with its bite and one with its tail. Traits: Hold Breath"},
 		"giant_shark": {ID: "giant_shark", Name: "Giant Shark", CR: 5, HP: 126, AC: 13, Attack: 8, AttackBonus: 9, Speed: 18, BlockRate: 0.05, XPValue: 1800, Ability: &MonsterAbility{Name: "Frenzy", Phase: "any", ProcChance: 0.4, Effect: "enrage"}, Notes: "SRD-tuned baseline — Frenzy (enrage) wired from traits. Traits: Blood Frenzy, Water Breathing"},
 		"gladiator": {ID: "gladiator", Name: "Gladiator", CR: 5, HP: 112, AC: 16, Attack: 8, AttackBonus: 7, Speed: 12, BlockRate: 0.1, XPValue: 1800, Ability: &MonsterAbility{Name: "Frenzy", Phase: "any", ProcChance: 0.4, Effect: "enrage"}, Notes: "SRD-tuned baseline — Frenzy (enrage) wired from traits. Multiattack: The gladiator makes three melee attacks or two ranged attacks. Traits: Brave, Brute"},
 		"gorgon": {ID: "gorgon", Name: "Gorgon", CR: 5, HP: 114, AC: 19, Attack: 8, AttackBonus: 8, Speed: 16, BlockRate: 0.15, XPValue: 1800, Ability: &MonsterAbility{Name: "Charge", Phase: "opening", ProcChance: 0.4, Effect: "bonus_damage"}, Notes: "SRD-tuned baseline — Charge (bonus_damage) wired from traits. Traits: Trampling Charge"},
-		"half_red_dragon_veteran": {ID: "half_red_dragon_veteran", Name: "Half-Red Dragon Veteran", CR: 5, HP: 65, AC: 18, Attack: 8, AttackBonus: 0, Speed: 12, BlockRate: 0.15, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The veteran makes two longsword attacks."},
+		"half_red_dragon_veteran": {ID: "half_red_dragon_veteran", Name: "Half-Red Dragon Veteran", CR: 5, HP: 65, AC: 18, Attack: 8, AttackBonus: 0, Speed: 12, BlockRate: 0.15, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The veteran makes two longsword attacks.", FireAttacker: true},
 		"hill_giant": {ID: "hill_giant", Name: "Hill Giant", CR: 5, HP: 105, AC: 13, Attack: 8, AttackBonus: 8, Speed: 16, BlockRate: 0.05, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The giant makes two greatclub attacks."},
 		"night_hag": {ID: "night_hag", Name: "Night Hag", CR: 5, HP: 112, AC: 17, Attack: 8, AttackBonus: 7, Speed: 12, BlockRate: 0.1, XPValue: 1800, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Traits: Innate Spellcasting, Magic Resistance, Night Hag Items, Hag Coven, Shared Spellcasting (Coven Only), Hag Eye (Coven Only)"},
 		"otyugh": {ID: "otyugh", Name: "Otyugh", CR: 5, HP: 114, AC: 14, Attack: 8, AttackBonus: 6, Speed: 12, BlockRate: 0.05, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The otyugh makes three attacks: one with its bite and two with its tentacles. Traits: Limited Telepathy"},
@@ -249,7 +249,7 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"werebear": {ID: "werebear", Name: "Werebear", CR: 5, HP: 135, AC: 10, Attack: 8, AttackBonus: 7, Speed: 12, BlockRate: 0, XPValue: 1800, Ability: &MonsterAbility{Name: "Evasive", Phase: "any", ProcChance: 0.3, Effect: "evade"}, Notes: "SRD-tuned baseline — Evasive (evade) wired from traits. Multiattack: In bear form, the werebear makes two claw attacks. Traits: Shapechanger, Keen Smell"},
 		"wraith": {ID: "wraith", Name: "Wraith", CR: 5, HP: 67, AC: 13, Attack: 8, AttackBonus: 6, Speed: 18, BlockRate: 0.05, XPValue: 1800, Ability: &MonsterAbility{Name: "Evasive", Phase: "any", ProcChance: 0.3, Effect: "evade"}, Notes: "SRD-tuned baseline — Evasive (evade) wired from traits. Traits: Incorporeal Movement, Sunlight Sensitivity"},
 		"xorn": {ID: "xorn", Name: "Xorn", CR: 5, HP: 73, AC: 19, Attack: 8, AttackBonus: 6, Speed: 8, BlockRate: 0.15, XPValue: 1800, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The xorn makes three claw attacks and one bite attack. Traits: Earth Glide, Stone Camouflage, Treasure Sense"},
-		"chimera": {ID: "chimera", Name: "Chimera", CR: 6, HP: 114, AC: 14, Attack: 10, AttackBonus: 0, Speed: 12, BlockRate: 0.05, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The chimera makes three attacks: one with its bite, one with its horns, and one with its claws."},
+		"chimera": {ID: "chimera", Name: "Chimera", CR: 6, HP: 114, AC: 14, Attack: 10, AttackBonus: 0, Speed: 12, BlockRate: 0.05, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The chimera makes three attacks: one with its bite, one with its horns, and one with its claws.", FireAttacker: true},
 		"drider": {ID: "drider", Name: "Drider", CR: 6, HP: 123, AC: 19, Attack: 10, AttackBonus: 6, Speed: 12, BlockRate: 0.15, XPValue: 2300, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The drider makes three attacks, either with its longsword or its longbow. Traits: Fey Ancestry, Innate Spellcasting, Spider Climb, Sunlight Sensitivity, Web Walker"},
 		"invisible_stalker": {ID: "invisible_stalker", Name: "Invisible Stalker", CR: 6, HP: 104, AC: 14, Attack: 10, AttackBonus: 6, Speed: 18, BlockRate: 0.05, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The stalker makes two slam attacks. Traits: Invisibility, Faultless Tracker"},
 		"mage": {ID: "mage", Name: "Mage", CR: 6, HP: 40, AC: 12, Attack: 10, AttackBonus: 5, Speed: 12, BlockRate: 0, XPValue: 2300, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Traits: Spellcasting"},
@@ -257,7 +257,7 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"medusa": {ID: "medusa", Name: "Medusa", CR: 6, HP: 127, AC: 15, Attack: 10, AttackBonus: 5, Speed: 12, BlockRate: 0.1, XPValue: 2300, Ability: &MonsterAbility{Name: "Frightful Presence", Phase: "opening", ProcChance: 0.4, Effect: "stun"}, Notes: "SRD-tuned baseline — Frightful Presence (stun) wired from traits. Multiattack: The medusa makes either three melee attacks - one with its snake hair and two with its shortsword - or two ranged attacks with its longbow. Traits: Petrifying Gaze"},
 		"vrock": {ID: "vrock", Name: "Vrock", CR: 6, HP: 104, AC: 15, Attack: 10, AttackBonus: 6, Speed: 16, BlockRate: 0.1, XPValue: 2300, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The vrock makes two attacks: one with its beak and one with its talons. Traits: Magic Resistance"},
 		"wyvern": {ID: "wyvern", Name: "Wyvern", CR: 6, HP: 110, AC: 13, Attack: 10, AttackBonus: 7, Speed: 8, BlockRate: 0.05, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The wyvern makes two attacks: one with its bite and one with its stinger."},
-		"young_brass_dragon": {ID: "young_brass_dragon", Name: "Young Brass Dragon", CR: 6, HP: 110, AC: 17, Attack: 10, AttackBonus: 0, Speed: 16, BlockRate: 0.1, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws."},
+		"young_brass_dragon": {ID: "young_brass_dragon", Name: "Young Brass Dragon", CR: 6, HP: 110, AC: 17, Attack: 10, AttackBonus: 0, Speed: 16, BlockRate: 0.1, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws.", FireAttacker: true},
 		"young_white_dragon": {ID: "young_white_dragon", Name: "Young White Dragon", CR: 6, HP: 133, AC: 17, Attack: 10, AttackBonus: 0, Speed: 16, BlockRate: 0.1, XPValue: 2300, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws. Traits: Ice Walk"},
 		"giant_ape": {ID: "giant_ape", Name: "Giant Ape", CR: 7, HP: 157, AC: 12, Attack: 12, AttackBonus: 9, Speed: 16, BlockRate: 0, XPValue: 2900, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The ape makes two fist attacks."},
 		"oni": {ID: "oni", Name: "Oni", CR: 7, HP: 110, AC: 16, Attack: 12, AttackBonus: 7, Speed: 12, BlockRate: 0.1, XPValue: 2900, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The oni makes two attacks, either with its claws or its glaive. Traits: Innate Spellcasting, Magic Weapons, Regeneration"},
@@ -286,19 +286,19 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"deva": {ID: "deva", Name: "Deva", CR: 10, HP: 136, AC: 17, Attack: 16, AttackBonus: 8, Speed: 12, BlockRate: 0.1, XPValue: 5900, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The deva makes two melee attacks. Traits: Angelic Weapons, Innate Spellcasting, Magic Resistance"},
 		"guardian_naga": {ID: "guardian_naga", Name: "Guardian Naga", CR: 10, HP: 127, AC: 18, Attack: 16, AttackBonus: 8, Speed: 16, BlockRate: 0.15, XPValue: 5900, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Traits: Rejuvenation, Spellcasting"},
 		"stone_golem": {ID: "stone_golem", Name: "Stone Golem", CR: 10, HP: 178, AC: 17, Attack: 16, AttackBonus: 10, Speed: 12, BlockRate: 0.1, XPValue: 5900, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The golem makes two slam attacks. Traits: Immutable Form, Magic Resistance, Magic Weapons"},
-		"young_gold_dragon": {ID: "young_gold_dragon", Name: "Young Gold Dragon", CR: 10, HP: 178, AC: 18, Attack: 16, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 5900, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws. Traits: Amphibious"},
-		"young_red_dragon": {ID: "young_red_dragon", Name: "Young Red Dragon", CR: 10, HP: 178, AC: 18, Attack: 16, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 5900, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws."},
+		"young_gold_dragon": {ID: "young_gold_dragon", Name: "Young Gold Dragon", CR: 10, HP: 178, AC: 18, Attack: 16, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 5900, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws. Traits: Amphibious", FireAttacker: true},
+		"young_red_dragon": {ID: "young_red_dragon", Name: "Young Red Dragon", CR: 10, HP: 178, AC: 18, Attack: 16, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 5900, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon makes three attacks: one with its bite and two with its claws.", FireAttacker: true},
 		"behir": {ID: "behir", Name: "Behir", CR: 11, HP: 168, AC: 17, Attack: 18, AttackBonus: 0, Speed: 18, BlockRate: 0.1, XPValue: 7200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The behir makes two attacks: one with its bite and one to constrict."},
 		"chain_devil": {ID: "chain_devil", Name: "Chain Devil", CR: 11, HP: 85, AC: 16, Attack: 18, AttackBonus: 8, Speed: 12, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The devil makes two attacks with its chains. Traits: Devil's Sight, Magic Resistance"},
 		"djinni": {ID: "djinni", Name: "Djinni", CR: 11, HP: 161, AC: 17, Attack: 18, AttackBonus: 9, Speed: 12, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Multiattack: The djinni makes three scimitar attacks. Traits: Elemental Demise, Innate Spellcasting, Variant: Genie Powers"},
-		"efreeti": {ID: "efreeti", Name: "Efreeti", CR: 11, HP: 200, AC: 17, Attack: 18, AttackBonus: 7, Speed: 16, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Multiattack: The efreeti makes two scimitar attacks or uses its Hurl Flame twice. Traits: Elemental Demise, Innate Spellcasting, Variant: Genie Powers"},
+		"efreeti": {ID: "efreeti", Name: "Efreeti", CR: 11, HP: 200, AC: 17, Attack: 18, AttackBonus: 7, Speed: 16, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Multiattack: The efreeti makes two scimitar attacks or uses its Hurl Flame twice. Traits: Elemental Demise, Innate Spellcasting, Variant: Genie Powers", FireAttacker: true},
 		"gynosphinx": {ID: "gynosphinx", Name: "Gynosphinx", CR: 11, HP: 136, AC: 17, Attack: 18, AttackBonus: 9, Speed: 16, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The sphinx makes two claw attacks. Traits: Inscrutable, Magic Weapons, Spellcasting"},
 		"horned_devil": {ID: "horned_devil", Name: "Horned Devil", CR: 11, HP: 178, AC: 18, Attack: 18, AttackBonus: 10, Speed: 8, BlockRate: 0.15, XPValue: 7200, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The devil makes three melee attacks: two with its fork and one with its tail. Traits: Devil's Sight, Magic Resistance"},
 		"remorhaz": {ID: "remorhaz", Name: "Remorhaz", CR: 11, HP: 195, AC: 17, Attack: 18, AttackBonus: 11, Speed: 12, BlockRate: 0.1, XPValue: 7200, Ability: &MonsterAbility{Name: "Damaging Aura", Phase: "any", ProcChance: 0.4, Effect: "retaliate"}, Notes: "SRD-tuned baseline — Damaging Aura (retaliate) wired from traits. Traits: Heated Body"},
 		"roc": {ID: "roc", Name: "Roc", CR: 11, HP: 248, AC: 15, Attack: 18, AttackBonus: 13, Speed: 8, BlockRate: 0.1, XPValue: 7200, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The roc makes two attacks: one with its beak and one with its talons. Traits: Keen Sight"},
 		"archmage": {ID: "archmage", Name: "Archmage", CR: 12, HP: 99, AC: 12, Attack: 19, AttackBonus: 6, Speed: 12, BlockRate: 0, XPValue: 8400, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Traits: Magic Resistance, Spellcasting"},
 		"erinyes": {ID: "erinyes", Name: "Erinyes", CR: 12, HP: 153, AC: 18, Attack: 19, AttackBonus: 8, Speed: 12, BlockRate: 0.15, XPValue: 8400, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The erinyes makes three attacks Traits: Hellish Weapons, Magic Resistance"},
-		"adult_brass_dragon": {ID: "adult_brass_dragon", Name: "Adult Brass Dragon", CR: 13, HP: 172, AC: 18, Attack: 21, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 10000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
+		"adult_brass_dragon": {ID: "adult_brass_dragon", Name: "Adult Brass Dragon", CR: 13, HP: 172, AC: 18, Attack: 21, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 10000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)", FireAttacker: true},
 		"adult_white_dragon": {ID: "adult_white_dragon", Name: "Adult White Dragon", CR: 13, HP: 200, AC: 18, Attack: 21, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 10000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Ice Walk, Legendary Resistance (3/Day)"},
 		"nalfeshnee": {ID: "nalfeshnee", Name: "Nalfeshnee", CR: 13, HP: 184, AC: 18, Attack: 21, AttackBonus: 10, Speed: 8, BlockRate: 0.15, XPValue: 10000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The nalfeshnee uses Horror Nimbus if it can. Traits: Magic Resistance"},
 		"rakshasa": {ID: "rakshasa", Name: "Rakshasa", CR: 13, HP: 110, AC: 16, Attack: 21, AttackBonus: 7, Speed: 16, BlockRate: 0.1, XPValue: 10000, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The rakshasa makes two claw attacks Traits: Limited Magic Immunity, Innate Spellcasting"},
@@ -316,12 +316,12 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"iron_golem": {ID: "iron_golem", Name: "Iron Golem", CR: 16, HP: 210, AC: 20, Attack: 26, AttackBonus: 0, Speed: 12, BlockRate: 0.15, XPValue: 15000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The golem makes two melee attacks. Traits: Fire Absorption, Immutable Form, Magic Resistance, Magic Weapons"},
 		"marilith": {ID: "marilith", Name: "Marilith", CR: 16, HP: 189, AC: 18, Attack: 26, AttackBonus: 9, Speed: 16, BlockRate: 0.15, XPValue: 15000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The marilith can make seven attacks: six with its longswords and one with its tail. Traits: Magic Resistance, Magic Weapons, Reactive"},
 		"planetar": {ID: "planetar", Name: "Planetar", CR: 16, HP: 200, AC: 19, Attack: 26, AttackBonus: 12, Speed: 16, BlockRate: 0.15, XPValue: 15000, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The planetar makes two melee attacks. Traits: Angelic Weapons, Divine Awareness, Innate Spellcasting, Magic Resistance"},
-		"adult_gold_dragon": {ID: "adult_gold_dragon", Name: "Adult Gold Dragon", CR: 17, HP: 256, AC: 19, Attack: 28, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 18000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Amphibious, Legendary Resistance (3/Day)"},
-		"adult_red_dragon": {ID: "adult_red_dragon", Name: "Adult Red Dragon", CR: 17, HP: 256, AC: 19, Attack: 28, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 18000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
+		"adult_gold_dragon": {ID: "adult_gold_dragon", Name: "Adult Gold Dragon", CR: 17, HP: 256, AC: 19, Attack: 28, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 18000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Amphibious, Legendary Resistance (3/Day)", FireAttacker: true},
+		"adult_red_dragon": {ID: "adult_red_dragon", Name: "Adult Red Dragon", CR: 17, HP: 256, AC: 19, Attack: 28, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 18000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)", FireAttacker: true},
 		"androsphinx": {ID: "androsphinx", Name: "Androsphinx", CR: 17, HP: 199, AC: 17, Attack: 28, AttackBonus: 12, Speed: 16, BlockRate: 0.1, XPValue: 18000, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The sphinx makes two claw attacks. Traits: Inscrutable, Magic Weapons, Spellcasting"},
-		"dragon_turtle": {ID: "dragon_turtle", Name: "Dragon Turtle", CR: 17, HP: 341, AC: 20, Attack: 28, AttackBonus: 0, Speed: 8, BlockRate: 0.15, XPValue: 18000, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon turtle makes three attacks: one with its bite and two with its claws. Traits: Amphibious"},
+		"dragon_turtle": {ID: "dragon_turtle", Name: "Dragon Turtle", CR: 17, HP: 341, AC: 20, Attack: 28, AttackBonus: 0, Speed: 8, BlockRate: 0.15, XPValue: 18000, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The dragon turtle makes three attacks: one with its bite and two with its claws. Traits: Amphibious", FireAttacker: true},
 		"balor": {ID: "balor", Name: "Balor", CR: 19, HP: 262, AC: 19, Attack: 31, AttackBonus: 14, Speed: 16, BlockRate: 0.15, XPValue: 22000, Ability: &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1, Effect: "death_aoe"}, Notes: "SRD-tuned baseline — Death Burst (death_aoe) wired from traits. Multiattack: The balor makes two attacks: one with its longsword and one with its whip. Traits: Death Throes, Fire Aura, Magic Resistance, Magic Weapons"},
-		"ancient_brass_dragon": {ID: "ancient_brass_dragon", Name: "Ancient Brass Dragon", CR: 20, HP: 297, AC: 20, Attack: 33, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 25000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
+		"ancient_brass_dragon": {ID: "ancient_brass_dragon", Name: "Ancient Brass Dragon", CR: 20, HP: 297, AC: 20, Attack: 33, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 25000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)", FireAttacker: true},
 		"ancient_white_dragon": {ID: "ancient_white_dragon", Name: "Ancient White Dragon", CR: 20, HP: 333, AC: 20, Attack: 33, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 25000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Ice Walk, Legendary Resistance (3/Day)"},
 		"pit_fiend": {ID: "pit_fiend", Name: "Pit Fiend", CR: 20, HP: 300, AC: 19, Attack: 33, AttackBonus: 14, Speed: 12, BlockRate: 0.15, XPValue: 25000, Ability: &MonsterAbility{Name: "Spellcasting", Phase: "opening", ProcChance: 0.5, Effect: "aoe"}, Notes: "SRD-tuned baseline — Spellcasting (aoe) wired from traits. Multiattack: The pit fiend makes four attacks: one with its bite, one with its claw, one with its mace, and one with its tail. Traits: Fear Aura, Magic Resistance, Magic Weapons, Innate Spellcasting"},
 		"ancient_black_dragon": {ID: "ancient_black_dragon", Name: "Ancient Black Dragon", CR: 21, HP: 367, AC: 22, Attack: 34, AttackBonus: 15, Speed: 16, BlockRate: 0.15, XPValue: 33000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Amphibious, Legendary Resistance (3/Day)"},
@@ -333,8 +333,8 @@ func buildTunedBestiarySRD() map[string]DnDMonsterTemplate {
 		"ancient_blue_dragon": {ID: "ancient_blue_dragon", Name: "Ancient Blue Dragon", CR: 23, HP: 481, AC: 22, Attack: 37, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 50000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
 		"ancient_silver_dragon": {ID: "ancient_silver_dragon", Name: "Ancient Silver Dragon", CR: 23, HP: 487, AC: 22, Attack: 37, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 50000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
 		"kraken": {ID: "kraken", Name: "Kraken", CR: 23, HP: 472, AC: 18, Attack: 37, AttackBonus: 7, Speed: 8, BlockRate: 0.15, XPValue: 50000, Notes: "SRD-tuned baseline — no ability wired (traits are non-combat). Multiattack: The kraken makes three tentacle attacks, each of which it can replace with one use of Fling. Traits: Amphibious, Freedom of Movement, Siege Monster"},
-		"ancient_gold_dragon": {ID: "ancient_gold_dragon", Name: "Ancient Gold Dragon", CR: 24, HP: 546, AC: 22, Attack: 38, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 62000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Amphibious, Legendary Resistance (3/Day)"},
-		"ancient_red_dragon": {ID: "ancient_red_dragon", Name: "Ancient Red Dragon", CR: 24, HP: 546, AC: 22, Attack: 38, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 62000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)"},
+		"ancient_gold_dragon": {ID: "ancient_gold_dragon", Name: "Ancient Gold Dragon", CR: 24, HP: 546, AC: 22, Attack: 38, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 62000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Amphibious, Legendary Resistance (3/Day)", FireAttacker: true},
+		"ancient_red_dragon": {ID: "ancient_red_dragon", Name: "Ancient Red Dragon", CR: 24, HP: 546, AC: 22, Attack: 38, AttackBonus: 0, Speed: 16, BlockRate: 0.15, XPValue: 62000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The dragon can use its Frightful Presence. Traits: Legendary Resistance (3/Day)", FireAttacker: true},
 		"tarrasque": {ID: "tarrasque", Name: "Tarrasque", CR: 30, HP: 676, AC: 25, Attack: 46, AttackBonus: 19, Speed: 16, BlockRate: 0.15, XPValue: 155000, Ability: &MonsterAbility{Name: "Magic Resistance", Phase: "any", ProcChance: 0.5, Effect: "spell_resist"}, Notes: "SRD-tuned baseline — Magic Resistance (spell_resist) wired from traits. Multiattack: The tarrasque can use its Frightful Presence. Traits: Legendary Resistance (3/Day), Magic Resistance, Reflective Carapace, Siege Monster"},
 	}
 }
diff --git a/internal/plugin/combat_engine.go b/internal/plugin/combat_engine.go
index 9c9c24f..7658b19 100644
--- a/internal/plugin/combat_engine.go
+++ b/internal/plugin/combat_engine.go
@@ -36,6 +36,13 @@ type CombatStats struct {
 	AbilityModForDamage int
 	WeaponProficient    bool // false → -4 attack penalty (appendix §8 implementation note)
 	TwoHandedMode       bool // true + versatile weapon → use larger versatile die
+
+	// FireAttacker tags monsters whose signature damage is fire (red dragons,
+	// fire elementals, hell hounds, magmin, balor, …). The enemy-attack path
+	// halves incoming damage when this is set on the enemy and FireResist is
+	// set on the player. Carried via toCombatStats; tuned generator derives it
+	// from SRD attack DamageType; hand-authored entries set it explicitly.
+	FireAttacker bool
 }
 
 type CombatModifiers struct {
@@ -71,6 +78,7 @@ type CombatModifiers struct {
 	LuckyReroll  bool // Halfling: reroll the first nat 1 of the fight
 	RageReady    bool // Orc: when HP first drops <50%, next attack deals +50% damage
 	PoisonResist bool // Dwarf: poison tick damage halved
+	FireResist   bool // Tiefling: incoming damage from fire-tagged sources halved
 
 	// Phase 10 SUB2a — subclass combat hooks.
 	// CritThreshold: lowest d20 roll that crits. 0 = use default (20).
@@ -910,6 +918,13 @@ func resolveEnemyAttack(st *combatState, player, enemy *Combatant, phase *Combat
 	if player.Mods.BerserkerRage && player.Mods.PhysicalResistRage {
 		dmg = max(1, dmg/2)
 	}
+	// Tiefling fire resistance — halve the enemy's primary attack when the
+	// monster's signature damage is fire (FireAttacker, set on the template).
+	// Aligned with the Berserker pattern: applied after crit-doubling so the
+	// resistance survives a nat 20.
+	if player.Mods.FireResist && enemy.Stats.FireAttacker {
+		dmg = max(1, dmg/2)
+	}
 	dmg = max(1, dmg)
 
 	if petDeflect {
@@ -1093,6 +1108,16 @@ func applyAbility(st *combatState, player, enemy *Combatant, phase *CombatPhase,
 		// An area burst that partly bypasses armor (defWeight cut to 0.4), so a
 		// high-defense build still feels it. Rider on top of the normal attack.
 		dmg := abilityHitDamage(st, player, enemy, phase, 0.7, 0.4)
+		// Tiefling fire resistance: the aoe_fire effect name encodes a fire
+		// burst (Burning Hands, Fireball, Fire Breath). Halve for FireResist.
+		// Generic "aoe" / "death_aoe" don't always carry fire damage, so we
+		// gate on the effect string — the FireAttacker flag on the monster
+		// covers fire-themed creatures whose death/aura uses a non-aoe_fire
+		// effect (e.g., magmin's death_aoe burst rides their FireAttacker tag
+		// via the primary-attack halving path).
+		if ab.Effect == "aoe_fire" && player.Mods.FireResist {
+			dmg = max(1, dmg/2)
+		}
 		st.playerHP = max(0, st.playerHP-dmg)
 		st.events = append(st.events, CombatEvent{
 			Round: st.round, Phase: phaseName, Actor: "enemy", Action: "aoe",
diff --git a/internal/plugin/dnd.go b/internal/plugin/dnd.go
index 19c4041..a45f3f5 100644
--- a/internal/plugin/dnd.go
+++ b/internal/plugin/dnd.go
@@ -36,11 +36,11 @@ const (
 	ClassCleric  DnDClass = "cleric"
 	ClassRanger  DnDClass = "ranger"
 
-	// Caster classes added as structural scaffolding ahead of the Open5e
-	// spell-data import. They are wired through the mechanical layer (HP/AC,
-	// slot tables, spellcasting ability) but kept Playable=false — they have
-	// no spell list yet, so !setup hides them. Flip Playable once Open5e
-	// lands their spells. Subclasses are deferred to a later pass.
+	// Caster classes — fully playable. Wired through the mechanical layer
+	// (HP/AC, slot tables, spellcasting ability) and shipped alongside the
+	// Open5e spell-data import: Playable=true and spell lists populated.
+	// Each chassis has a Phase-2/3 balance rider in applyClassPassives plus
+	// a subclass entry at L3/L5 (see dnd_subclass*.go).
 	ClassDruid    DnDClass = "druid"
 	ClassBard     DnDClass = "bard"
 	ClassSorcerer DnDClass = "sorcerer"
@@ -56,6 +56,11 @@ type DnDRaceInfo struct {
 	// choice (keeps !setup uniform across races).
 	Mods    [6]int
 	Passive string
+	// BestFit is the menu-time hint that frames a stat spread as a specialist
+	// build rather than a list of penalties (Orc with three -1s reads brutal
+	// out of context; "best with: Barbarian, Fighter" reframes it). Comma-
+	// separated class display names; rendered by renderRaceMenu.
+	BestFit string
 }
 
 type DnDClassInfo struct {
@@ -80,13 +85,13 @@ type DnDClassInfo struct {
 // Orc +6) — a spiky race concentrated into high-value stats needs fewer
 // points to match a flat one.
 var dndRaces = []DnDRaceInfo{
-	{RaceHuman, "Human", [6]int{1, 1, 1, 1, 1, 1}, "Versatile: +1 to every ability score"},
-	{RaceElf, "Elf", [6]int{0, 3, -1, 2, 3, 0}, "Darkvision; immune to sleep effects"},
-	{RaceDwarf, "Dwarf", [6]int{2, -1, 3, 1, 1, -1}, "Poison resistance; bonus vs. underground enemies"},
-	{RaceHalfling, "Halfling", [6]int{0, 3, 1, 0, 2, 0}, "Lucky: once per combat, reroll a natural 1"},
-	{RaceOrc, "Orc", [6]int{6, -1, 3, -1, -1, 0}, "Rage: once per combat, +50% damage for one turn"},
-	{RaceTiefling, "Tiefling", [6]int{0, 2, 0, 1, 0, 3}, "Fire resistance; bonus on CHA checks"},
-	{RaceHalfElf, "Half-Elf", [6]int{0, 2, 0, 1, 1, 2}, "Two bonus skill proficiencies"},
+	{RaceHuman, "Human", [6]int{1, 1, 1, 1, 1, 1}, "Versatile: +1 to every ability score", "any class"},
+	{RaceElf, "Elf", [6]int{0, 3, -1, 2, 3, 0}, "Keen senses; trance keeps you sharp through long marches", "Ranger, Mage, Druid"},
+	{RaceDwarf, "Dwarf", [6]int{2, -1, 3, 1, 1, -1}, "Poison resistance; sure-footed in the deep places", "Fighter, Cleric, Paladin"},
+	{RaceHalfling, "Halfling", [6]int{0, 3, 1, 0, 2, 0}, "Lucky: once per combat, reroll a natural 1", "Rogue, Bard, Ranger"},
+	{RaceOrc, "Orc", [6]int{6, -1, 3, -1, -1, 0}, "Rage: once per combat, +50% damage for one turn", "Fighter, Ranger"},
+	{RaceTiefling, "Tiefling", [6]int{0, 2, 0, 1, 0, 3}, "Fiendish heritage: incoming fire damage halved", "Sorcerer, Warlock, Bard"},
+	{RaceHalfElf, "Half-Elf", [6]int{0, 2, 0, 1, 1, 2}, "Adaptable: cross-cultural know-how, equally at ease in any company", "Bard, Paladin, Sorcerer"},
 }
 
 var dndClasses = []DnDClassInfo{
diff --git a/internal/plugin/dnd_bestiary.go b/internal/plugin/dnd_bestiary.go
index 143aee7..3e91739 100644
--- a/internal/plugin/dnd_bestiary.go
+++ b/internal/plugin/dnd_bestiary.go
@@ -23,6 +23,12 @@ type DnDMonsterTemplate struct {
 	Ability     *MonsterAbility
 	XPValue     int
 	Notes       string
+
+	// FireAttacker: signature damage is fire. Tieflings (FireResist) take half
+	// damage from the enemy's main attack and from any aoe_fire ability rider.
+	// Tuned-bestiary generator sets this from SRD attack DamageType; the
+	// hand-authored entries below tag it explicitly.
+	FireAttacker bool
 }
 
 // dndBestiary is the canonical lookup. Keyed by ID.
@@ -174,6 +180,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Fireball", Phase: "decisive", ProcChance: 0.55, Effect: "aoe_fire"},
 			XPValue:   1100,
 			Notes:     "Elite. Fireball 8d6 DEX DC 13. Rejuvenation in 1h unless holy water used.",
+			FireAttacker: true,
 		},
 		"boss_grol_unbroken": {
 			ID: "boss_grol_unbroken", Name: "Grol the Unbroken",
@@ -382,6 +389,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Death Burst", Phase: "decisive", ProcChance: 1.00, Effect: "death_aoe"},
 			XPValue:   100,
 			Notes:     "Death Burst: 2d6 fire in 10 ft on death. Ignite flammable objects on touch.",
+			FireAttacker: true,
 		},
 		"azer": {
 			ID: "azer", Name: "Azer",
@@ -390,6 +398,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Fire Aura", Phase: "any", ProcChance: 0.50, Effect: "retaliate"},
 			XPValue:   450,
 			Notes:     "1d10 fire to melee attackers; immune to fire; weapons deal heated bonus damage.",
+			FireAttacker: true,
 		},
 		"salamander": {
 			ID: "salamander", Name: "Salamander",
@@ -398,6 +407,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Constrict", Phase: "any", ProcChance: 0.40, Effect: "stun"},
 			XPValue:   1800,
 			Notes:     "Constrict grapple + 2d6 fire/turn; spear multiattack; fire aura.",
+			FireAttacker: true,
 		},
 		"fire_elemental": {
 			ID: "fire_elemental", Name: "Fire Elemental",
@@ -406,6 +416,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Fire Form", Phase: "any", ProcChance: 0.50, Effect: "retaliate"},
 			XPValue:   1800,
 			Notes:     "1d10 contact fire damage; immune to fire; vulnerable to water/cold.",
+			FireAttacker: true,
 		},
 		"helmed_horror": {
 			ID: "helmed_horror", Name: "Helmed Horror",
@@ -422,6 +433,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Forge Breath", Phase: "any", ProcChance: 0.30, Effect: "aoe"},
 			XPValue:   5000,
 			Notes:     "Underforge boss. Phase 2 below 50% HP — spawns 2 Fire Elementals; breath recharge 4–6.",
+			FireAttacker: true,
 		},
 	}
 	for id, m := range tier3 {
@@ -586,6 +598,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Fire Breath", Phase: "any", ProcChance: 0.30, Effect: "aoe_fire"},
 			XPValue:   5900,
 			Notes:     "Elite. Fire Breath 16d6 DEX DC 21; Multiattack; Frightful Presence WIS DC 16.",
+			FireAttacker: true,
 		},
 		"boss_infernax": {
 			ID: "boss_infernax", Name: "Infernax the Undying",
@@ -594,6 +607,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Frightful Presence", Phase: "opening", ProcChance: 0.80, Effect: "stun"},
 			XPValue:   62000,
 			Notes:     "Dragon's Lair boss. Ancient Red Dragon. Legendary Actions; Lair Actions; phase 2 below 50% HP — fire ignores resistance.",
+			FireAttacker: true,
 		},
 		// ── Abyss Portal ─────────────────────────────────────────────────
 		"quasit": {
@@ -643,6 +657,7 @@ var _ = func() bool {
 			Ability:   &MonsterAbility{Name: "Lightning Discharge", Phase: "decisive", ProcChance: 0.40, Effect: "aoe"},
 			XPValue:   22000,
 			Notes:     "Abyss Portal boss. Balor. Fire Aura; Death Throes on death; Demonic Resilience; Legendary Resistance 3/combat; phase 2 below 40% HP — Huge size, advantage on attacks.",
+			FireAttacker: true,
 		},
 	}
 	for id, m := range tier45 {
@@ -675,6 +690,7 @@ func (m DnDMonsterTemplate) toCombatStats() (CombatStats, CombatModifiers) {
 		BlockRate:   m.BlockRate,
 		AC:          m.AC,
 		AttackBonus: m.AttackBonus,
+		FireAttacker: m.FireAttacker,
 	}
 	mods := CombatModifiers{DamageReduct: 1.0}
 	return stats, mods
diff --git a/internal/plugin/dnd_passives.go b/internal/plugin/dnd_passives.go
index 105749e..65284b1 100644
--- a/internal/plugin/dnd_passives.go
+++ b/internal/plugin/dnd_passives.go
@@ -75,10 +75,9 @@ func clampNonNeg(x int) int {
 }
 
 // applyRacePassives sets the combat-impacting flags from the player's race.
-// Races whose passives apply to skill checks or non-combat scenarios
-// (Tiefling fire resist, Elf sleep immunity, Half-Elf bonus profs, Human
-// floating +1) are handled in their respective phases and have no combat
-// hook in Phase 3.
+// Elf "trance" (resilience flavor), Half-Elf "adaptable" (cross-cultural know-
+// how), and the Human floating +1 are non-combat or stat-only and have no
+// engine hook here.
 func applyRacePassives(stats *CombatStats, mods *CombatModifiers, c *DnDCharacter) {
 	switch c.Race {
 	case RaceHalfling:
@@ -87,6 +86,11 @@ func applyRacePassives(stats *CombatStats, mods *CombatModifiers, c *DnDCharacte
 		mods.RageReady = true
 	case RaceDwarf:
 		mods.PoisonResist = true
+	case RaceTiefling:
+		// Fiendish heritage: incoming fire damage is halved by the combat
+		// engine (enemy attack path + aoe_fire ability) and by the trap
+		// resolver (fire-tagged traps).
+		mods.FireResist = true
 	}
 }
 
diff --git a/internal/plugin/dnd_round1_test.go b/internal/plugin/dnd_round1_test.go
index c7ae8e4..23415a4 100644
--- a/internal/plugin/dnd_round1_test.go
+++ b/internal/plugin/dnd_round1_test.go
@@ -15,16 +15,16 @@ import (
 
 func TestApplyRacePassives(t *testing.T) {
 	cases := []struct {
-		race                              DnDRace
-		wantLucky, wantRage, wantPoisonOK bool
+		race                                          DnDRace
+		wantLucky, wantRage, wantPoisonOK, wantFireOK bool
 	}{
-		{RaceHalfling, true, false, false},
-		{RaceOrc, false, true, false},
-		{RaceDwarf, false, false, true},
-		{RaceHuman, false, false, false},
-		{RaceElf, false, false, false},
-		{RaceTiefling, false, false, false},
-		{RaceHalfElf, false, false, false},
+		{RaceHalfling, true, false, false, false},
+		{RaceOrc, false, true, false, false},
+		{RaceDwarf, false, false, true, false},
+		{RaceHuman, false, false, false, false},
+		{RaceElf, false, false, false, false},
+		{RaceTiefling, false, false, false, true},
+		{RaceHalfElf, false, false, false, false},
 	}
 	for _, tc := range cases {
 		mods := CombatModifiers{}
@@ -39,6 +39,9 @@ func TestApplyRacePassives(t *testing.T) {
 		if mods.PoisonResist != tc.wantPoisonOK {
 			t.Errorf("%s PoisonResist = %v, want %v", tc.race, mods.PoisonResist, tc.wantPoisonOK)
 		}
+		if mods.FireResist != tc.wantFireOK {
+			t.Errorf("%s FireResist = %v, want %v", tc.race, mods.FireResist, tc.wantFireOK)
+		}
 	}
 }
 
@@ -161,6 +164,55 @@ func TestDwarfPoisonResistance(t *testing.T) {
 	}
 }
 
+// TestTieflingFireResistance: a fire-tagged monster's primary attack should
+// land for ~half damage on a Tiefling. Measured by summing the per-hit damage
+// events from a stat-locked encounter so the dice noise averages out.
+func TestTieflingFireResistance(t *testing.T) {
+	enemy := Combatant{
+		// FireAttacker tags this as fire-themed (e.g., fire elemental).
+		// AttackBonus high enough to land reliably against player AC 10.
+		Stats: CombatStats{MaxHP: 100000, Attack: 12, Defense: 0, Speed: 5, AC: 10, AttackBonus: 10, FireAttacker: true},
+		Mods:  CombatModifiers{DamageReduct: 1.0},
+	}
+	phases := []CombatPhase{{Name: "Bake", Rounds: 6, AttackWeight: 1.0, DefenseWeight: 1.0, SpeedWeight: 1.0}}
+
+	makePlayer := func(resist bool) Combatant {
+		// Sturdy player that won't die mid-trial; low attack so the enemy
+		// keeps swinging the whole phase. No block, no DR ride, no crit
+		// path on the enemy side beyond a nat 20.
+		return Combatant{
+			IsPlayer: true,
+			Stats:    CombatStats{MaxHP: 200000, Attack: 1, Defense: 0, Speed: 5, AC: 10, AttackBonus: 0},
+			Mods:     CombatModifiers{DamageReduct: 1.0, FireResist: resist},
+		}
+	}
+	sumEnemyHits := func(r CombatResult) int {
+		s := 0
+		for _, ev := range r.Events {
+			if ev.Actor == "enemy" && (ev.Action == "hit" || ev.Action == "crit") {
+				s += ev.Damage
+			}
+		}
+		return s
+	}
+	totalUnprot, totalProt := 0, 0
+	const trials = 300
+	for i := 0; i < trials; i++ {
+		totalUnprot += sumEnemyHits(SimulateCombat(makePlayer(false), enemy, phases))
+		totalProt += sumEnemyHits(SimulateCombat(makePlayer(true), enemy, phases))
+	}
+	if totalUnprot == 0 {
+		t.Fatal("no unprotected fire damage observed; test setup broken")
+	}
+	avgU := float64(totalUnprot) / float64(trials)
+	avgP := float64(totalProt) / float64(trials)
+	ratio := avgP / avgU
+	if ratio < 0.40 || ratio > 0.65 {
+		t.Errorf("tiefling fire ratio = %.3f (avg unprot=%.1f, prot=%.1f); want ~0.5",
+			ratio, avgU, avgP)
+	}
+}
+
 // ── combat_level freeze ──────────────────────────────────────────────────────
 
 func TestCheckAdvLevelUp_FrozenForDnDChars(t *testing.T) {
diff --git a/internal/plugin/dnd_setup.go b/internal/plugin/dnd_setup.go
index 286eca7..f1b9c68 100644
--- a/internal/plugin/dnd_setup.go
+++ b/internal/plugin/dnd_setup.go
@@ -563,6 +563,9 @@ func renderRaceMenu() string {
 	var b strings.Builder
 	for _, ri := range dndRaces {
 		b.WriteString(fmt.Sprintf("  • **%s** — %s\n", ri.Display, ri.Passive))
+		if ri.BestFit != "" {
+			b.WriteString(fmt.Sprintf("    _best with: %s_\n", ri.BestFit))
+		}
 	}
 	return b.String()
 }
diff --git a/internal/plugin/dnd_zone_combat.go b/internal/plugin/dnd_zone_combat.go
index c9874ea..0946fd7 100644
--- a/internal/plugin/dnd_zone_combat.go
+++ b/internal/plugin/dnd_zone_combat.go
@@ -295,6 +295,10 @@ func (p *AdventurePlugin) applyTrapEffectWithDetect(
 	}
 
 	dmg := rollTrapDamage(trap, run.RunID, run.CurrentRoom)
+	// Tiefling fiendish heritage — fire traps deal half damage.
+	if trap.DamageType == "fire" && dndChar.Race == RaceTiefling {
+		dmg = max(1, dmg/2)
+	}
 	if dmg >= dndChar.HPCurrent {
 		dmg = dndChar.HPCurrent - 1
 		if dmg < 0 {