Watery Palace
Land-Island Swamp (Rare)

(Tap: Add U or B to your mana pool.)

Watery Palace enters the battlefield tapped unless you pay 1 life.

2, Tap: Target land becomes a 3/3 blue Shapeshifter creature until end of turn. It's still a land.

1BB, Tap, Sacrifice Watery Palace: Target player discards a card.

Greg Tedin