Enflamed Lightning

A blast of flaming lightning erupts from your hands. Each creature in a 90-foot line must make a Dexterity saving throw. A creature takes 6d8 lightning and 2d8 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.