Leander, Proven Combatant

+1: Tap target creature an opponent controls. Target creature you control gets +1/+1 until end of turn.
0: Leander, Proven Combatant becomes a 5/4 white human warrior with indestructible. prevent all damage that would be dealt to him.
-8: Tap all creatures an opponent controls. Creatures you control get +2/+1 until end of turn.