This is pretty cool. Kinda works like a Factotum from 3.5. It seems balanced and if anything on the weak side. I might have Audacity refresh on short rests. By comparison a hunter ranger with colossus slayer by level 5 can get an additional 1d8 dmg on every turn. This is 50% of you or an ally getting 1d8 to hit 5 times per day if your intelligence is maxed out. Granted to hit is considered twice as valuable as dmg but its still too low of usage. Having it 5 times per short rest sounds about right as it is realistically more like 3-4 times per short rest. It might be a bit high at level 3. I would say have it upgrade to refreshing on short rests at some point.