Dust to Dust

This spell has two parts. Upon casting this spell the first time your 9th level spell slot is sealed for the duration and you are unable to cast other 9th level spells until you dismiss this spell as an action. Once you do your 9th level spell slot is restored upon finishing a long rest.

The first part of this spell requires infusing 6 trinkets, each with the essence of one attribute, Strength, Dexterity, Constitution, Intelligence, Wisdom, Charisma. A trinket may be made of any material, must be carved, sculpted, or created to resemble something appropriate for the attribute, and must be worth at least 10,000 gold.

To infuse a trinket you must target a creature within 60 feet while holding the trinket. As a bonus action, you speak the creature's true name and, if the creature has 50 hit points or less, it turns to dust and its essence and one attribute score of your choice is absorbed into the appropriate trinket. Alternatively, you may target the remains of a creature that died in the last minute to absorb one attribute.

Once all six trinkets are infused with each of the attributes you may cast the second part of this spell. While holding one of the trinkets you target a creature within 60 feet with less than half of its hit points maximum or one which had activated its Mythic trait. This then becomes a concentration spell.

While concentrating on this spell, damage or becoming incapacitated will not break your concentration. Your concentration on this spell only breaks if you die, or if you or the target spend 3 consecutive rounds more than 300 feet apart or on different planes of existence.

You may now use a bonus action to speak the creature's true name and demand it ceases to exist. The creature must make a Contested Check using its own ability score against that stored in the trinket. The trinket's check is made with advantage if its stored attribute score is higher than that of the targeted creature.

If the creature fails the contest, its attribute used in the contest is permanently set to 10. This can only be reversed with the use of a Wish spell. If the target succeeds the contest its attribute is lowered by 5 down to a minimum of 10. Success or failure, the trinket is then destroyed.

On your subsequent turns, while holding one of the remaining trinkets, you may use a bonus action to force the target to attempt another Contested Check. After all trinkets have been expended you may continue to use a bonus action on your turns to force the target into another Contested Check, targeting each attribute where the target succeeded on the contest. For those checks you must use your own attribute for the Contest, or use one from a willing creature within 60 feet of you.

If the target has failed all of its Contests, its existence is utterly erased; its ability scores are reduced to 0, and it is beyond the reach of any magic, including resurrection spells of divine power.

After this spell ends your current and maximum level and each of your attributes are permanently reduced by 2. This effect cannot be reversed.

"Let me be the final one to ever speak your name. I consign you to oblivion. Return to nothingness from which you came, and let the universe forget your stain!"