Mire Cradle
Artifact Land (Rare)

(Mire Cradle isn't a spell.)

Mire Cradle enters the battlefield tapped unless you pay 1.

Mire Cradle is indestructible. (Destroy effects and lethal damage don't destroy it.)

Tap: Add B or G to your mana pool.

Put Mire Cradle on top of your library: Add 1 to your mana pool.

James Schuler