Altum's Meteor Swarm

Blazing Meteorites plummet to the ground at four different points you can see within range. Each creature in a 60-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 20d8 fire damage and 20d8 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 by each of the points they are inside of at each point.

The spell damages objects in the area and ignites flammable objects that aren't being worn or carried, Bringing complete and utter ruin to people, city, and country.