Amoeba, Voice of Theros

+1: Target creature gets +1/+1 and Vigilance until end of turn
-2: Tap target creature an opponent controls. You may use this ability any time you could cast an instant. Activate this ability only once per turn.
-8: You gain control of target creature or planeswalker. Untap it and it gains Haste. Sacrifice it at the beginning of your end step.