Essentia Casus Talum

Essentia Casus Talum (Latin. Lit. Essence Casualty Weapons) are a set of Treasure Tools made, for whatever reason, to draw power from Distortions around the user of the Essentia Casus Talum and slowly "turn the user into a distortion."

They were all created by a member of the Crimson Lord organization affectionately called "The Knights of the Round Table" to gain power for and to revive their lost member, leader and Crimson God, "King Arthur."

Known Items
Geneon Vivillo, owned by Nobuyuki Watanabe, is an Essentia Casus Talum.

Effects
Essentia Casus Talum have various effects that make each of them unique forms of weaponry, equipment or items. However, all of them store distortions around them inside of them, and then turn their user into "distortions." They will turn when 1 of 3 circumstances are met.

1: When the user's Power of Existence is devoured.

2: When the user is killed.

3(depends on the Essentia Casus Talum): If the user's Power of Existence is lower/weaker than the Distortion at any point when they attempt to use it, their Power of Existence will be overwhelmed.

Due to the necessity of the Distortions to the "Knights of the Round Table," the distortions created by Essentia Casus Talum, unlike normal Distortions which are present in the Abyss Between Worlds and damage both worlds, these special forms of Distortions are only present in and only damage the human realm. The same goes for the "Storm That Devours the Worlds" occurs.

Trivia

 * Being created too soon, this concept is subject to change.