Dreadtheft

You feed on a creature's deepest-set fears and terrors, wracking it with terrible pain. Choose one creature you can see within range. It must make a Charisma saving throw, taking 4d8 Psychic damage on a failure, or half as much on a success. If the target is frightened, but not of you, it takes an additional 2d8 Psychic damage. If it is frightened of you, it takes double the Psychic damage, for a total of 8d8.

At Higher Levels. If you cast this spell using a spell slot of 5th level or higher, increase the damage by 1d8 (5d8 if not frightened, 7d8 if frightened, 10d8 if frightened of you)