Blight's Madness Bolt

You extend an illusory bolt of madness at a creature you can see within range. That creature must succeed on a Wisdom saving throw or take 6d6 psychic damage and be affected by a short-term madness rolled randomly. On a successful saving throw, the target take only half as much damage and is not affected by madness.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.