Skeletal Garrison
Land-Plains Swamp (Rare)

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

When Skeletal Garrison enters the battlefield, you lose 2 life unless you reveal a White card from your hand.

Tap, Sacrifice a Swamp: Add BB to your mana pool.

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

Jason Chippy