Metaffinity

 
Prerequisite(s): Ability to cast Arcane spells without preparation (Bard/Sorcerer), at least one other Metamagic feat (See main index)
 
Benefit: You are able to cast any spell augmented by other metamagic feats that you know without increasing the spell's casting time. Spells cast through use of this feat use up a spell slot one level higher. This feat can be combined with Quicken Spell, a feat not normally useful to Sorcerers and Bards.
 
Source: Mongoose Ultimate Feats