Chain Fire

You create a bolt of Fire that streaks toward a target of your choice that you can see within range. A bolt then leap from that target to as many other targets within 15 feet of the previously attacked target. A target can be a creature or a flammable object and can be targeted by any number of the bolts as long as there is a target before the target.

A target must make a Dexterity saving throw. The target takes 10d20 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using 2 spell slots of 9th level, 5 additional d20s fire damage