Taunting Blade

You brandish the weapon used in the spell's casting and it becomes imbued in bardic magic. For the duration, when you hit a creature with that weapon, the target becomes surrounded by mocking whispers until the start of your next turn. If the target fails a saving throw or misses an attack within the duration, the target takes 1d6 psychic damage.

At Higher Levels. At 5th level, attacks with this weapon deals an extra 1d6 psychic damage to the target hit, and the damage the target takes for failing a saving throw or missing an attack roll increases to 2d6. Both damage rolls increase by 1d6 at 11th level (2d6 and 3d6) and again at 17th level (3d6 and 4d6).