Magosi, the Waterveil

Magosi, the Waterveil enters the battlefield tapped.

[Tap]: Add [U] to your mana pool.

[U], [Tap]: Put an eon counter on Magosi, the Waterveil. Skip your next turn.

[Tap], Remove an eon counter from Magosi, the Waterveil and return it to its owner's hand: Take an extra turn after this one.