Gurtle, the Glorified Mountain

Gurtle, the Glorified Mountain enters the battlefield tapped with four slumber counters on
it.
As long as Gurtle has a slumber counter on it,
it's a land. (It's not a creature.)
{1}, {t}, Remove a slumber counter from Gurtle:
Add {c}{g}{u} to your mana pool. You gain 2 life.