Isshin, the Sword Saint

+2: Until end of turn, Isshin, the Sword Saint becomes a 5/5 Human Samurai creature with indestructible that's still a planeswalker.
-1: Do X damage to any target where X is the amount of loyalty counters on Isshin, the Sword Saint
-8: Exile target permanent. You may play this card without paying its mana cost. If it's a creature it gains indestructible.