Sulfurous Lake
Land-Island Swamp (Rare)

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

Sulfurous Lake enters the battlefield tapped unless you control four or more multicolored permanents.

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

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

Jason Deschamps