Gideon, Arm of Justice

+2: Put a +1/+1 counter on target creature. It gains vigilance and first strike until end of turn. If it dies this turn, you gain 3 life.
0: Until your next turn, Gideon, Arm of Justice becomes an 8/8 Human Soldier creature with indestructible and vigilance that's still a planeswalker.
-12: Exile up to 10 target permanents.