Vicious Mockery (Rapier)

As an action, make a weapon attach with the Rapier of Mockery. On a hit, as a bonus action, the sword releases a string of insults laced with subtle enchantments at the targeted creature. The creature takes an additional 1d4 psychic damage on top of the weapon attack damage.

This spell's damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).