Malak, Glutted on Souls

+1: Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard.
0: Sacrifice a creature. If you do, create a 2/2 black Zombie creature token, draw a card and you gain 2 life.
-6: Malak deals damage to target opponent equal to the number of creature cards in all graveyards.