Sarkhan, the feared one

+2: This card becomes a 5/2 lion beast with flying and hexproof until end of turn. It's still a planeswalker
0: This planeswalker cannot be damaged until end of turn
-10: This planeswalker becomes a 17/17 God lion with indestructible and deathtouch you can still use its planeswalker abilities. Add 5 mana