Uncharted Lands

({t}: Add {g} or {u} to your mana pool.)
Uncharted Lands enters the battlefield tapped.
When uncharted lands enters the battlefield, add {c} to your mana pool.
"I left many memories behind. Even in the taint of my old lands, leaving wasn't easy. But I would trade it all for views like this."
-Alvis, the Wanderer.