Gideon, Martial Paragon is a mythic Legendary Planeswalker — Gideon card from Amonkhet (AKH), collector number 270. Current market price: — (foil $0.92), TCGplayer market prices via Scryfall.
+2: Untap all creatures you control. Those creatures get +1/+1 until end of turn. 0: Until end of turn, Gideon becomes a 5/5 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn. −10: Creatures you control get +2/+2 until end of turn. Tap all creatures your opponents control.