Draco Meteor

A small mark appears on the ground at a point you can see within range. At the Start of your next turn, a blazing orb of fire plummets to the ground towards this point. Each creature in a 30-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 25d6 fire damage and 25d6 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.