WigglyFace's page

I have been treating it like the Arcane Pool ability and Divine Bond (Weapon) ability from the Magus and Paladin classes, respectively, with a cost of one round of Bardic Performance, a static duration of one minute, a Standard Action to activate, and a limit of one instance per weapon. I also ruled that using it during another song ends that song (though my Bard has Lingering Performance so he's able to restart before any bonuses drop).

I've found it to not be overpowered compared to the rest of the party.

Your GM is watching you Pelgore...

Also, just wanted to clarify that this is a fully custom world with very very very low magic, so the fact that he had magic fists before the rest of the party had magic weapons means that he was THE DPR option vs. damage reduction and this build puts out a lot of damage.