Elorias, Ring Leader

0: Exile target creature card from a graveyard. Elorias gains loyalty equal to the exiled card's power, then deals 2 damage to himself.
-3: Create two 2/2 black assassin creature tokens with deathtouch.
-7: Exile all cards from all graveyards, then put all creatures exiled by Elorias onto the battlefield under your control.