Deathly Forge
Land (Rare)

At the beginning of your end step, if you didn't cast any spells this turn, Deathly Forge deals 1 damage to you.

Tap: Add W or B to your mana pool.

Sacrifice Deathly Forge: Add W or B to your mana pool.

2: Deathly Forge becomes a 2/2 black Wizard creature until end of turn. It's still a land.

Jason Tedin