Unleash the Inferno

You launch a searing bolt of flame at a target you choose within range. Make a ranged spell attack against the target. On a hit, it takes 11d6 fire damage, then if this fire damage reduced it to 0 hit points, the bolt of flame explodes in a 5-foot-radius Sphere centered on the target. Each creature in that area makes a Dexterity saving throw, taking 6d6 Fire damage on a failed save or half as much damage on a successful one.

Flammable objects in the area that aren’t being worn or carried start burning.