Jekai Aerie

( {t}: Add {u}, {r}, or {w}.)
Jekai Aerie enters the battlefield tapped.
Pay 2 life: Sacrifice Jekai Aerie add one mana of
any color this land can produce. Activate this
ability only when this land is tapped.
The cliffs of the Jekai allow the hatchlings to grow
strong when they fall.