Azrael, Ebon Archangel

Emerge {3}{b}{r}{g}
Flying, Annihilator X, where X is the number of nontoken permanents you have sacrificed this turn.

{b}{r}{g}: You may cast spells as though they had Emerge until end of turn. Their Emerge cost is equal to their mana cost.

{t}, Sacrifice a creature: You may cast creature spells from your graveyard until end of turn by paying 2 life in addition to their other costs.