Text (AQ+errata): 1/2. ; {Tap}, Sacrifice an artifact: Add to your mana pool an amount of black mana equal to the sacrificed artifact's converted mana cost. [Oracle 1999/09/03]
Before errata, you had to both control and own the artifact. Now you just have to control it. [D'Angelo 2000/02/25]
Extended tournaments (see Rule 913) have always banned this card.
