Flooded Swamp
Land-Island Swamp (Rare)

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

When Flooded Swamp enters the battlefield, sacrifice it unless you pay B.

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

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

Therese Pollack