You've learned the secrets of how to use magic to bend space to your whim. You reach your hands out in front of you, pouring out your magical energy into a single point and summon a sphere of blinding black light, every creature within 50ft of the sphere (including you) has to make a constitution saving throw or be blinded for 1 round. The sphere measures 15ft in diameter and is considered a "Black Star", every creature within 20ft of the sphere (excluding you) has to succeed on a strength saving throw or be sucked into the sphere. Upon being sucked into the black star a creature takes 5d6 fire damage and an additional 1d6 for every subsequent round spent in the star. To escape the star a creature must succeed on either a strength or dexterity saving throw in which case it then becomes immune to the gravity effect. The Black Star can stay for a maximum of 5 rounds where it will then dissipate, if the caster so chooses the spell can end early and explode into 5 motes of fire that the caster can then use to target any of up to 5 creatures within sight of the caster. Each individual mote deals 1d8 fire or radiant damage (Your choice)

At Higher Levels. When you cast this spell using a spell slot of 6th or higher, the number of motes summoned by an exploding star is increased by 2 for each slot level above 5th : Additionally, when this spell is cast using a 9th level spell slot, the caster gains the option to, instead of summoning motes of fire, make the Black Star explode into a supernova where each creature within a 100ft radius must make a dexterity saving throw and take 20d8 fire damage or half as much on a successful one.