Blaoth, Waker Of Glory

+4: Blaoth, Waker Of Glory deals 6 damage divided amongst any target of your choice.
-12: All creatures you control get +8/+8 and get protection from black until end of turn.You gain 6 life
-20: Destroy all nonland permanents you don't control. All opponents lose 6 life. You gain 10 life.