wazaa

You create a stormy wall up to 60 feet long, 20 feet high, and 1 foot thick, or a ringed wall up to 20 feet in diameter. Creatures in the area must make a Dexterity saving throw, taking 5d8 lightning damage on a failed save, or half on a successful save. A creature that ends its turn within 10 feet of the storm side of the wall takes 5d8 lightning damage.