Avacyn, Fury Reincarnated

+2: Target player discards a card and you gain two life if you control a demon, if you control an angel you draw a card instead
-X: Return target angel/demon of mana value X to the battlefield. Then target opponent sacrifices the creature with the highest mana value they own
-7: Destroy all non-demon creatures. Then return all creatures destroyed this way onto the battlefield under your control, they gain haste