Kyouraku Shunsui

Deathtouch, Vigilance, Haste

Shikai: Kyouraku Shunsui gains "{t} Place a Dark Game counter on target creature. Creatures with Dark Game tokens are tapped when Shunsui becomes tapped, untap when Shunsui untaps, and do not untap on their player's upkeep."

Bankai: Creatures with Dark Game counters that do not block when attacked or attack on their controllers turn are sacrificed at the beginning of their controller's postcombat main phase.