Ashes to Ashes

You ignite yourself with an immense, fiery explosion that deals devastating damage to all creatures around you, including yourself. As you concentrate on this spell, you cannot take actions or reactions, and you may not willingly interrupt your concentration on this spell. If your concentration is broken, the spell does not take effect, and the spell slot is consumed. This spell’s effect occurs at the start of your next turn as long as your concentration is not broken, causing you to take 100 radiant damage. This spell ignores resistance to radiant damage and treats immunity to radiant damage as resistance.

Except creatures within 10 feet of you , all creatures within 150 feet of you must succeed on a Constitution saving throw, taking 10d10 radiant damage on a failed save, or half as much on a success. Additionally, creatures take more damage the closer they are to you:

Within 90 feet, this spell does an additional 25 radiant damage
Within 45 feet, this spell does an additional 50 radiant damage
Within 20 feet, this spell does an additional 75 radiant damage

Creatures within 10 feet of you do not roll the saving throw, and take an additional 100+10d10 radiant damage.

A creature that takes 100 or more radiant damage or more from this spell is Blinded until a Greater Restoration or Heal spell is cast to restore its vision. Additionally, a creature reduced to 0 hit points by this spell is turned to ashes and may only be brought back by a Wish or True Ressurection spell.

“They say you are immortal, a God even… Let’s put that to the test, shall we?!”