Earworm

You vocalize an extremely catchy jingle that seeps its way into the heads of your enemies. The target must succeed on an Wisdom saving throw or take 1d6 thunder damage and subtract 1d4 from the next saving throw it makes before the end of your next turn.

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