Black Hole Swarm

You can only cast this spell if you know the spell meteor swarm and this spell uses 2 spell slots instead of one.

Spheres of Annihilation start falling from the sky within the spell's range, however, no sphere lands within a sphere with a 10ft. radius centering around you. Each creature or object outside of that radius is pulled to the Spheres of Annihilation, which are now 1d100 feet wide each. Each sphere deals force damage equal to their size(in feet)d4. Those objects of creatures are bombarded with an amount of 1d3 Spheres of Annihilation on their turn. On the last round, a giant Sphere of Annihilation appears that has a radius of 50 miles. You can choose to direct this at something, and this will deal 100d20 damage. After casting this spell, the strain on your body causes you gain 6 levels of exhaustion. If you are a level 20 spellcaster with at least two 9th level spell slots, make a constitution saving throw with a DC of 30(if you are carrying legendary magic items or artifacts, the DC is divided by two(rounded up) for each legendary item or artifact you have. After, all the legendary magic items lose their magic and become normal, and the artifacts lose their magic and lie dormant for 1d100 years), on a success, you only gain 5 levels of exhaustion. On a failure, you gain 6 levels of exhaustion as you normally would.