Chaos Reach

A beam of lightning flashes out from your hand in a 5-foot-wide, 90-foot-long line. Each creature in the line must make a Dexterity saving throw. On a failed save, a creature takes 6d8 Lightning damage and is blinded until your next turn. On a successful save, it takes half as much damage and isn't blinded by this spell. Constructs have disadvantage on this saving throw.

You can create a new line of lightning as your action on any turn until the spell ends.

For the duration, a spark of electricity shines in your hand. It sheds bright light in a 30-foot radius and dim light for an additional 30 feet.