Draining Telepathy

You attempt to force a creature into their doom by telepathically communicating with them. A millipede crawls into their ear, and they must make a Wisdom Saving Throw or suffer the first effect detailed below. Every 24 hours after the initial failure, they must remake the saving throw. The continuous failures are also detailed below. If the first saving throw is a success, the spell ends. A remove curse spell, calm emotions, or any effect that cures magical disease ends the spell. The spell fails if the target is effected by a mind blank spell.

1st Failure: The creature takes 4d10 psychic damage. Success: 2d10 psychic damage.

2nd Failure: The creature gains one level of exhaustion which cannot be circumvented in any way. Success: 3d10 psychic damage.

3rd Failure: The creature gains the following flaw: "I do not believe there is any hope for me or the world" and has disadvantage on Wisdom Saving Throws. Success: 4d10 psychic damage.

4th Failure: The creature gains an additional level of exhaustion. Success: The creature takes 4d10+ 1d6 psychic damage.

5th Failure: The creature takes 8d10 psychic damage and has its intelligence score permanently reduced by 1d6 (to a minimum of 1). Success: 4d10+ 2d6 psychic damage.

6th Failure: The creature loses proficiency in all of its skills and attacks. Success: 4d10+3d6 psychic damage.

7th Failure: The creature loses proficiency with all of its saving throws, and gains an additional level of exhaustion. Success: 4d10+4d6 psychic damage.

8th Failure: Death. Success: 8d10 psychic damage.