Voltaic Snap

With a resounding snap of your fingers, electricity arcs to a creature of your choice within range, then subsequently arcs to another creature of your choice within 15 feet of the original creature. each creature must succeed a dexterity saving throw or take 1d6 lightning damage.

The spell's damage increases by 1d6 when you reach 5th level (2d6), and 17th level (3d6).

The spell gains an additional arc at 11th level.