You call forth large wings of mist, smoke, and shadow that attach to your back and heed your commands, granting you a flying speed of 60 feet and lightly obscuring you. As an action while you have these wings, you can choose to unleash the power trapped within them, ending the spell and releasing a wave of nightmarish energy. Creatures within 30 feet of you must make a Charisma saving throw. If they fail, they take 6d10 psychic damage and become frightened of you until the end of your next turn. If they succeed, they take half as much damage and are not frightened.