You can cast spells using metamagic feats more easily than normal.
Prerequisite: Four metamagic feats, Spellcraft 30 ranks
Benefit: The spell slot modifier of all your metamagic feats is reduced by one level, to a minimum of +1. For instance, you could cast a quickened spell as a spell of three levels higher rather than four levels higher. This feat has no effect on metamagic feats whose spell slot modifier is +1 or less.
Special: You can gain this feat multiple times. The effects stack, though you can't reduce any metamagic feat's spell slot modifier to less than +1.