Summoning cosmic energy, you create a small protostar that burns and crushes enemies with its solar might.

You chose a point within the spells range to center the star on. The star starts small, at a radius of 5ft, but grows by 5ft for each round you maintain concentration on it. All creatures within 30ft of the star must make a strength saving throw or be pulled into the sphere, and all objects not being worn or carried are also pulled in. A creature starting or ending its turn inside the star must make a Constitution saving throw or take 4d6 fire damage and 4d6 force damage, or half as much on a successful save.

A creature inside the star that has 0 hit points is disintegrated, destroying all items it is wearing or carrying, except magic items. The creature can be restored to life only by means of a true resurrection or a wish spell.

When the star is 50ft or larger, you may choose to end the spell, causing one of the following effects:

Supernova. You cause the star to implode. All creatures within 90ft of the star are blinded for 1d4+2 rounds, and must make a Dexterity saving throw, taking 8d10 radiant damage on a failed save, or half as much on a successful save.

Neutron Burst. The star erupts in a stream of radiation and light. A 150ft line of energy lances out in a direction of your choosing. All creatures in the area must make a Dexterity saving throw, taking 10d10 force damage on a failed save, or half as much on a successful save.

Annihilate. You expunge the star from existence, taking everything inside it with it. A creature must succeed a Charisma saving throw, or be ripped from reality, dying instantly, unable to be revived by any method short of the wish spell. On a successful save the creature takes 10d10 force damage. The stress of causing this effect weakens you. After enduring that stress, each time you cast a spell until you finish a long rest, you take 1d10 necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength drops to 8, if it isn't 8 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days.

Losing concentration on this spell causes it to end harmlessly.