Mary, Mother of God

Indestructible. Hexproof. Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
When you cast Mary, Mother of God, exile all demons on the battlefield. Players may not cast demons while Mary, Mother of God is on the Battlefield. When Mary, Mother of God enters the Battlefield, search your library for a card named Wrath of God and put in your hand.