Phenax, The Deceptor

+2: Target creature gets +3/+0 and gains first strike until end of turn.
-3: Creatures you control get +2/+2 until end of turn. Phenax, The Deceptor deals 4 damage to each creature.
-12: Exile all permanents target player controls. He or she loses life equal to the number of cards exiled this way and you gain that much life.