Crater Catacombs
Land (Rare)

Crater Catacombs enters the battlefield tapped unless you control two or more creatures.

Tap: Add B or R to your mana pool.

Put Crater Catacombs on top of your library: Add 1 to your mana pool.

R, Sacrifice Crater Catacombs: Crater Catacombs deals 1 damage to target creature or player.

John Prescott