Ben Kenobi in Exile

+1: Until your next turn, prevent all damage target permanent would deal.
0: Until end of turn, Ben Kenobi in Exile becomes a 4/4 Human Jedi creature that's indestructible and is still a planeswalker.
0: You get an emblem with "As long as you control an Obi-Wan planeswalker, you can't lose the game and your opponents can't win the game."