168-card deck with new card types (Skip Everyone, Discard All,
Wild Reverse Draw Four, Wild Draw Six/Ten, Wild Color Roulette),
draw stacking, draw-until-playable, mercy elimination at 25 cards,
and optional 7-0 hand swap/rotation rule. Works in both solo and
multiplayer. Includes blackjack max player increase to 4.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
