Taran'cael's Skyspark

You create a mote of lightning and shoot them at a target within range.

Make a ranged spell attack. On a hit, the target takes 1d8 lightning damage. A flammable object hit by this spell ignites if it isn't being worn or carried.

As the strength of this spell increases you can create an additional mote when you reach level 5 (2), 11th level (3), and 17th level (4).
You can shoot at different targets with each mote or hurl all of them at one target. Make ranged spell attack rolls for each target.