Wandering Fumarole is a rare Land card from Oath of the Gatewatch Promos (POGW), collector number 182s. Current market price: — (foil $0.71), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {U} or {R}. {2}{U}{R}: Until end of turn, this land becomes a 1/4 blue and red Elemental creature with "{0}: Switch this creature's power and toughness until end of turn." It's still a land.