Coastal Desert

({t}: Add {w}, {u} or {r} to your mana pool.)
Coastal Desert enters the battlefield tapped and,
if you didn't play it from your hand, with a depletion counter on it.
Coastal Desert doesn't untap during your untap step if it has a depletion counter on it. At the beginning of your upkeep, remove a depletion counter from Coastal Desert.