Saroth, the Thirsting

+1: Create a 2/2 black Living Shadow creature token with deathtouch and unblockable.
-2: Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
-6: You get an emblem with "During your upkeep create a 2/2 black Living Shadow creature token with deathtouch and unblockable."