Mana Matrix

Artifact

Instant and enchantment spells you cast cost up to less to cast.

2004-10-04:
Multiple Matrices are cumulative. Two will reduce the cost by up to {4}, and so on.
2004-10-04:
Only affects its controller, not all players.
2004-10-04:
Only works on instants and enchantments. It does not work on sorceries.
2004-10-04:
Only reduces the generic mana portion of a spell’s cost. If the cost does not include generic mana or includes less than {2}, you get a reduced or null effect from this card.