Comet

You cause a comet to fall from the sky and crash to the ground at a point you can see within range.

The comet creates a 50ft deep, 50ft radius crater on impact. Any creature in that radius must make a Dexterity saving throw. A creature takes 20d10 force damage on a failed saving throw, or half as much on a success. All structures in the crater are destroyed, as are all nonmagical objects that aren’t being worn or held.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the damage increases by 1d10 for each slot level about 7th.