Like Bards, you learned to lace your vast compendium of facts and remarks with enchantments to hurl at a chosen individual in range, that can hear you.
They need to succeed a WIS Saving Throw or take 1d6 psychic damage and have disadventage on their next attack roll until the end of their next turn.

At Higher Levels. This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).