Dread Spectre

You mask yourself with a potent illusion, appearing as a dreadful spectre. When you cast the spell, and at the start of each of your turns for the duration, each creature of your choice within 30 feet of you must succeed on a Wisdom saving throw or be frightened of you until the spell ends. A creature frightened by this spell can repeat the saving throw at the end of each of its turns, ending the effect on itself a success.

When you cast the spell, and as an action on each of your turns for the duration, you can pick a frightened creature you can see within 30 feet of you. That creature takes 4d10 psychic damage.