Gideon, Champion of Justice 93 (Commander 2021)

+1: Put a loyalty counter on Gideon for each creature target opponent controls. 0: Until end of turn, Gideon becomes a Human Soldier creature with power and toughness each equal to the number of loyalty counters on him and gains indestructible. He's still a planeswalker. Prevent all damage that would be dealt to him this turn. −15: Exile all other permanents.

NM - $2.20
LP - $2.20
MP - $2.20
HP - $2.20
DMG - $2.20