Divine Lightning

You beseech a divine deity to smite your enemies. A bolt of divine lightning shoots forth from you in a direction you choose, creating a line that is 100 feet long and 5 feet wide. Each creature in this area must make a Dexterity saving throw, taking 5d10 lightning damage on a failed save, or half as much on a success. Fiends and undead take an additional 1d10 of radiant damage.

At Higher Levels. When you cast this spell with a spell slot of 4th level or higher, the lightning damage increases by 1d10 for each level above 3rd. The radiant damage for fiends or undead also increases by 1d10 for each level above 3rd.