Arasthula's Exclusion

Upon casting this spell, choose a number of creatures you can see up to your spellcasting ability modifier. For the duration, if a chosen creature ends their turn within 30 feet of you, they are forced to make a Wisdom saving throw. On a failed save, they take 4d8 psychic damage and become frightened of you until the end of their next turn. On a success, they take half as much damage and aren't frightened of you.