Text (AQ+errata): {Tap}: Add {3} to your mana pool. Spend this mana only to cast artifact spells. [Oracle 2009/07/08]
This mana may be used on costs which are added to the spell cost, such as with Sphere of Resistance or Kicker (see Rule 702.30). [Rules Team 2001/05/01]
This mana may not be used to pay costs imposed after the spell is initially played, as with Power Sink and Nether Void. [WotC Rules Team 1995/10/18]
You can spend the mana on costs on the spell's text. [WotC Rules Team 1995/11/10]
The mana cannot be used to pay Echo costs. [D'Angelo 1999/04/06]
Vintage tournaments (see Rule 911) restricted this card from 1994/06/13 to 1997/10/01.
Legacy tournaments (see Rule 912) have banned this card since 2004/09/20. It was previously banned from the creation of this format until 1999/04/01.
Extended tournaments (see Rule 913) have always banned this card.
Standard (Type 2) tournaments (see Rule 914) have always banned this card, since it is not in the environment.
