Skeletal Hold
Land-Swamp Mountain (Rare)

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

When Skeletal Hold enters the battlefield, sacrifice it unless you pay R.

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

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

Douglas Walker