Meteor Swarm

Blazing orbs of fire plummet to the ground at four different points you can see within range. Each creature in a 40-foot-radius sphere centered on each point must make a Dexterity saving throw, taking 20d6 fire damage and 20d6 bludgeoning damage on a failure, or half on a success. A creature in the area of more than one sphere is affected only once. The spell damages objects in the area and ignites flammable objects that aren't being worn or carried. For a single, cataclysmic moment, the grey sky of Aethara is split by fire that rivals the hidden sun. The craters left behind are indistinguishable from the scars of the Sundering itself.