Chaotic Spark

You create a bolt of lightning that arcs toward a target of your choice that you can see within range. The bolt then leaps from that target to many other targets, each of which must be within 30 feet of the first target. A target can be a creature or an object and can be targeted by only one of the bolts.

You must roll a d20 to determine if it hits your target or yourself. On numbers 10 or higher, the target takes 6d6 lightning damage and half as much damage to its nearby allies within 30ft. On numbers 9 or lower, you take 6d6 lightning damage and half as much to your nearby allies within 30ft.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, one additional d6 is added to the damage per spell level.