Distracting Charm

You are capable of disarming foes with your charm and wit, leaving them open to attack. Your charisma score increases by 1, and as a bonus action you force a creature to make a charisma save against your spell save DC. On a failure, the next attack made against this creature has advantage. This ability cannot affect creatures who are immune to the charmed status effect, and has a number of uses equal to your charisma modifier. You regain all uses of this ability on a long rest.