Overgrown Furnace
Land (Rare)

When Overgrown Furnace enters the battlefield, sacrifice it unless you pay 1 life.

Tap: Add R or G to your mana pool.

Tap: Add 2 to your mana pool. Put Overgrown Furnace on top of your library.

1: Overgrown Furnace becomes a 2/2 green Squirrel Stag creature until end of turn. It's still a land.

John Tedin