Been playing some 13th Age lately, time for some ideas to come out.
Inspire Competence Bard Talent
Up to a number of times equal to your charisma per scene when one our you allies attempts to use a skill check, you may apply one of your backgrounds to that roll that is appropriate. This requires no action, but requires you to be able to be heard or seen by the target.
Thoughts?
Throat Punch Games 