Arcing Bolt

You focus lightning within your grasp and send it arcing at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 lightning damage, if the damage rolled on the die is 8 then the lightning arcs to one other person of your choice within 15 feet of your original target and you may roll to hit the new target.

The amount of times it can arc increases by 1 when you reach 5th level (2 Arcs), 11th level (3 Arcs), and 17th level (4 Arcs).

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).