Uren Vel, the Living Pyre

+1: Exile the top card of your library. You may have Uren Vel deal 1 damage to you. If you do, you may play that card this turn.
-3: Uren Vel deals damage to each player equal to the number of cards in his or her hand and the damage can't be prevented.
-6: Uren Vel deals 5 damage to each creature.