Tranquil Isle
Land (Rare)

Tranquil Isle enters the battlefield tapped.

1, Tap: Add WW, WU or UU to your mana pool. Tranquil Isle deals 1 damage to you.

1W: Tranquil Isle becomes a 0/4 white and blue Spirit creature with defender until end of turn. It's still a land.

Therese Deschamps