Elauria

You create a storm of lightning bolts that electrifies a 40ft radius, 80ft high cylinder. All creatures in the area must make a Dexterity saving throw, taking 6d6 lightning damage and 6d6 force damage on a failure, or half as much on a success. The surfaces in the area become electrified for one minute, dealing 3d6 lightning damage to any creature that starts its turn there.