Grimgrin, Corpse-Born | Magic: The Gathering
Formats Grimgrin, Corpse-Born is Legal in
Official Oracle Text for Grimgrin, Corpse-Born
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.
Official Rulings for Grimgrin, Corpse-Born
9/22/2011 : If the defending player controls no creatures when Grimgrin attacks, the last ability will be removed from the stack and have no effect.
7/1/2013 : If Grimgrin's last ability resolves, but the targeted creature isn't destroyed (perhaps because it regenerated or has indestructible), you'll still put a +1/+1 on Grimgrin.