Battle Hymn (3.5e Feat)
From D&D Wiki
Battle Hymn [Music, Action]
You can inspire your allies to true acts of heroism.
Prerequisite: Bardic music ability, inspire courage
Benefit: When you use your bardic music to inspire courage, you can choose to spend three more daily uses of bardic music to grant each ally that is able to hear you a free action point. The action point is lost if it is not spent before the effect of the music wears off. Allies may gain only one action point through this feat per encounter.
Note: This feat is obviously only useful in campaigns where action points are used, such as in the Eberron setting.