Leechridden Flats
Land (Rare)

Whenever Leechridden Flats becomes tapped, it deals 1 damage to you.

Tap: Add W or B to your mana pool.

Tap: Add 2 to your mana pool. Put Leechridden Flats on top of your library.

WB: Leechridden Flats becomes a 2/1 black and white Specter Skeleton creature until end of turn. It's still a land.

Jason Nielsen