Magosi, the Waterveil

Rules:

Magosi, the Waterveil enters the battlefield tapped.

T: Add   to your mana pool.

 , T: Put an eon counter on Magosi, the Waterveil. Skip your next turn.

T, Remove an eon counter from Magosi, the Waterveil and return it to its owner's hand: Take an extra turn after this one.