A stroke of electricity forming a line 20 feet long and 5 feet wide blasts out from you in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 1d6 lightning damage on a failed save.

This spell increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).