Twisted Maw

Play on any basic land. If that land leaves play,
Bury Twisted Maw.
Land Twisted Maw is on has, "At the beginning
of your upkeep lose 1 life. {t}: Consume (destroy) target attacking creature, gain life equal to its toughness".
This creature cannot attack or block, and may be targeted in combat as if it were a player or planeswalker.