Isle Underground
Land-Island Swamp (Rare)

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

Isle Underground enters the battlefield tapped unless you pay B.

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

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

Lars Staples