Comet Strike

A blazing orb of fire plummets to the ground at a point you can see within range. Each creature in a 40-foot-radius sphere centered on a point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 12d6 fire damage and 12d6 bludgeoning damage on a failed save, or half as much damage on a successful one. A creature in the area of more than one fiery burst is affected only once.

The spell damages objects in the area and ignites flammable objects that aren't being worn or carried.