Two tines of lightning burst from your fist to electrocute a pair of creatures within range. Pick two creatures within 10 feet of each other. Both of them take 1d6 lightning damage, or half as much on a Dexterity saving throw. If you so wish, you may only target one creature.

The damage increases by 1d6 at 5th level (2d6), 11th level (3d6) and 20th level (4d6).