Text (US): {Tap}: Add {U} to your mana pool for each artifact you control.
If there is a Tolarian Academy in play when you play a new one, you cannot tap the new one for mana before it gets buried as a duplicate Legend. [D'Angelo 1999/05/01]
This counts as a "land tapped for mana" even if you control no artifacts and it generate zero mana with the ability. [D'Angelo 2007/12/05]
Vintage tournaments (see Rule 911) have restricted this card since 1999/01/01.
Legacy tournaments (see Rule 912) have banned this card since 1999/01/01.
Extended tournaments (see Rule 913) have banned this card since 1999/01/01.
Standard (Type 2) tournaments (see Rule 914) have banned this card since 1999/01/01.
Urza Block Constructed tournaments (see Rule 916.6) have banned this card since 1999/07/01.
