Pocket Singularity

You create an area of dense gravitational energy at a point within range. Each creature within a 20 ft. radius of this point at the time of casting or that ends its turn within the radius makes a Constitution saving throw, taking 3d6 Force damage on a failed save or half as much on a successful one. The 20 foot area around this singularity is considered difficult terrain. Flying creatures have disadvantage on this saving throw, and creatures that are Huge or larger have advantage on this saving throw. Items that are not held down or worn are pulled into the Pocket Singularity for the duration of the spell.

On a failed save, a target is dragged to the center of the singularity and is Restrained. The target makes a Constitution saving throw at the end of each of it's turns, taking 3d6 damage on a fail, or half on a success and ending the effect. If the singularity is moved, any creatures restrained by it are moved with it.

As a Bonus Action, you may move the Pocket Singularity up to 30 ft. to an unoccupied space you can see.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for every other spell slot level above 3.

Amplify. As a reaction to being targeted by an attack or a spell while within 60 feet of the center of the singularity, you can choose to fall into the singularity and slingshot to a new point within 30 feet of the center. If this movement would remove you from the triggering effects area, you instead take no damage on a save instead of half damage. If the triggering effect was an attack, you reduce the damage taken by your spellcasting ability modifier.

Partial Paradox. This spell can be combined with Inverted Density to generate a version of the higher level spell, Paradox Collapse. To use the spell in this way, you must have the ability to cast level 9 spells, know Paradox Collapse, and combine a Pocket Singularity of 5th level or higher with an Inverted Density of 6th level or higher.