Uncanny Dilettante

You're travels have taken you to the wrong side of the law, inspired by the share of tricks you learned there, you have learned to incorporate some of your less reputable companions' celeverest techniques into your own unique style. You learn thieves' cant and you gain access to the rogue's sneak attack feature. You follow all the same rules as sneak attack, except you must expend a use of your bardic inspiration to do so. Your sneak attack damage is determined by the sneak attack damage column of the rogue table. Your sneak attack level is equal to 1 + your bard level divided by 3 (rounded down), counting every 3 levels you have in the bard class as one rogue level for the purposes of determining your sneak attack damage dice.