Wandering Fumarole (OGW) from Oath of the Gatewatch, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Florian de Gesincourt
• Card Text:
  Wandering Fumarole enters the battlefield tapped.
  T: Add U or R to your mana pool.
  2UR: Until end of turn, Wandering Fumarole 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.