Arc Lightning

A charge of arcing lightning jumps from your fingertips to a target creature within range. After striking the first creature, you can cause the lightning can potentially jump to up to three more creatures. You can't target a creature with the lightning more than once, and you must be able to see each creature you target.

Choose a target creature within 60 feet that you can see. That target must make a dexterity save. On a failed save the creature takes 4d8 lightning damage and you may choose a second target within 20 feet of that creature. On a successful save, the target takes half damage.

The second target must make a dexterity save. On a failed save the creature takes 3d8 lightning damage and you may choose a third target within 20 feet of that creature. On a successful save, the target takes half damage.

The third target must make a dexterity save. On a failed save the creature takes 2d8 lightning damage and you may choose a fourth target within 20 feet of that creature. On a successful save, the target takes half damage.

The fourth target must make a dexterity save. On a failed save the creature takes 1d8 lightning damage. On a successful save, the target takes half damage.