Orsros, Celestial Undeath

-3: Gain life equal to your devotion to black and white.
+2: Put a 4/4 black and white zombie ogre token with deathtouch and haste onto the battlefield. Gain 2.
-15: Put target creature from any graveyard onto the the battlefield under your control. Target creature now gains +7/+7 and Indestructible.