Wandering Fumarole is a rare Land card from Oath of the Gatewatch (OGW), collector number 182. Current market price: $0.35 (foil $0.45), 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.