Terevon's Soul Grasp

As an additional cost to cast this spell, either sacrifice a creature, or discard a creature card.
Gain control of target creature until end of turn.
Untap that creature. It gains haste and
+2/+1. At the beginning of the next end step,
sacrifice that creature.
When that creature dies, it deals X damage
divided as you choose to up to 3 target
creatures, where X is it's power.