Grimgrin, Corpse-Born
Legendary Creature — Zombie Warrior, {3}{U}{B}
Oracle Text
Grimgrin enters tapped and doesn't untap during your untap step.
Sacrifice another creature: Untap Grimgrin and put a +1/+1 counter on it.
Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin.