Wandering Fumarole

Wandering Fumarole enters the battlefield tapped.
{t}: Add {u} or {r} to your mana pool.
{2} {u} {r}: 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.