Gideon of the Trials

+1: Until your next turn, prevent all damage target permanant would deal
0: Until end of turn, Gideon of the trials becomes a 4/4 Human Soldier creature with indestructible that's still a Planeswalker. Prevent all damage
0: You get an emblem with "As long as you control a Gideon planenswalker, you can't lose the game and your opponents can't win the game"