Eldon's Sparking Hands

A small storm of lightning shoots forth from you in the shape of a cone. Each creature in a 20-foot Cone makes a Dexterity saving throw, taking 4d6 Lightning damage on a failed save or half as much damage on a successful one.

Objects that can burn that are in the Cone that aren’t being worn or carried start burning because of the lightning

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 2.