An'Teros, Raven Scion

+1: Create a 1/1 Spirit Raven creature token with Flying and Deathtouch.
-X: Target X creatures, they gain Deathtouch and Lifelink until the beginning of the next Endstep.
-10: You get an Emblem that says: "When a creature dies, return it to the battlefield under your control at the beginning of the next Endstep."