Affinity for artifacts (This spell costsless to cast for each artifact you control.)
Artifact creature spells you cast have affinity for artifacts. (They costless to cast for each artifact you control.)
12/1/2004 The spells gain affinity for artifacts as they’re put onto the stack. They don’t have the ability while they’re cards in your hand.
12/1/2004 If Mycosynth Golem is sacrificed as part of the cost to cast a spell, the cost reduction will already be locked in, and the cost won’t be increased.
12/1/2004 Two or more instances of the affinity ability are cumulative, even if they’re both affinity for the same thing.