Imbue Power (3.5e Feat)
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Imbue Power [Metamagic]
Simply put, theres more them one way to use magic power.
Prerequisite: Weapon Focus, Imbuement, Imbue Seeking
Benefit: You can sacrifice a spell slot in order to make your weapon (that you have weapon focus in) become a + x magic weapon where x is the level of the spell slot sacrificed. This effect lasts a number of rounds equal to 1/2 you caster level. Doing this is considered a free action.
Special: A fighter may choose this feat as a bonus fighter feat