Old One Eye

+1: Create a 4/3 red and black Tyranid Carnifex creature with Haste, Menace and Mutate. Sacrifice it at the end of your turn
0: If Old One Eye is destroyed until the beginning of your next turn, instead return Old One Eye from your graveyard to the battlefield
-7: Destroy target creature and each creature you don't control with toughness equal to or less than the destroyed creature