John, Corrupted Mind

+3: Sacrifice a permanent, destroy target permanent an opponent controls you both lose life equal to that permanents converted mana cost.
0: John, Corrupted Mind becomes a 8/8 Eldrazi Human with annihilator 2 and indestructible until end of turn.
-10: Destroy all creatures on the battlefield you don't control each opponent loses life equal to the number of cards in all graveyards.