Wanderwine Sanctuary
Land (Rare)

Wanderwine Sanctuary enters the battlefield tapped unless you sacrifice a White permanent.

U, Tap: Add WW to your mana pool.

W, Tap: Add UU to your mana pool.

WU: Wanderwine Sanctuary becomes a 2/1 blue and white Illusion creature until end of turn. It's still a land.

Steve Chan