You create a wall made of undead spirits that scares all those who get too close.

You create a wall, up to 60 feet long, 20 feet tall, and 1 inch thick composed of spectral faces and limbs. These souls produce a loud noise that can be heard from one side only of the wall. Any creature that starts its turn or moves within 30 feet of that side of the wall for the first time on its turn must succeed on a Wisdom saving throw or be frightened until the spell ends. A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Any creature that enters the wall must make a Wisdom saving throw, taking 6d8 necrotic damage on a failed save, or half as much damage on a successful one.