Doubtful Murmurs

You send murmuring voices into the back of a creatures mind. Choose a creature you can see within your range. The target must then make a Wisdom saving throw, on a success the target takes (half 1d4 rounded down) psychic damage. On a failure the target takes 1d4 psychic damage. Until Doubtful murmurs is cast onto another creature or until the creature uses an action to dispel the murmurs, the creature will take its (Charisma/Wisdom/Intelligence, which ever is highest) modifier psychic damage whenever it fails an attack roll or saving throw.

Cantrip Upgrade. The damage increases by +1d4 when you reach levels 5 (Modifier + 1d4), 11 (Modifier + 2d4), and 17 (Modifier + 3d4).