Taunting Blade

You brandish the weapon used in the spell's casting and make a melee attack with it against one creature within range of that weapon. On a hit, the target suffers the weapon attack's normal effects and then becomes enshrouded by mocking whispers until the start of your next turn. If the target fails an ability check or misses an attack roll before then, the target takes 1d6 psychic damage, and the spell ends.

At Higher Levels. At 5th level, the melee attack deals an extra 1d6 psychic damage to the target on a hit, and the damage the target takes for failing an ability check 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).