Haachama

Menace, deathtouch
When Haachama enters the battlefield,
non-Horror creatures get -X/-X until end of
turn, where X is the amount of {c} spent to cast
her. If another creature would die this turn, exile
it instead.
When Haachama dies, return a creature you own
with mana value 4 or less from your graveyard
or exile to the battlefield.