Dragon’s Cataclysm

You call down a massive meteor of fire from the sky, impacting a point you choose within range. Each creature in a 40-foot radius sphere centered on that point must make a Dexterity saving throw. On a failed save, a creature takes 8d6 fire damage, or half as much on a successful save. The area remains ablaze with intense heat; the fire deals 2d6 fire damage to any creature that starts its turn in the area. The fire ignites any flammable objects in the area that aren’t being worn or carried.