Aperxelitol Sigillum

"....And thus, let all things reach its climax and come to a fateful end."

- Tagline.

Aperxelitol Sigillum (, Apāzerītōru Shigiruramu; lit. "Final Countdown to Armageddon") is the personification of Macabrenus Goetion's existence and the embodiment of Szhikveria's desire to bring chaos to all existing planes, Earthland and otherwise. Created from her design and based on the various beliefs held by a myriad races on the world's end, it's considered to be, in her words, "an embodiment of — the final event of all things".

A Caster Magic, it's viewed as a volatile form of the Black Arts and branded as a Forbidden Magic by Szhikveria herself, who noted that it has the capabilities of utterly decimating even the greatest deities with sheer ease, something no other magic aside is capable of, foregoing God Slayer Magic. It's also a form of Subspecies Magic — requiring Bradman to be in the Grim Reaper transformation of the Memento Mori to properly utilize. It's said that there are a few who's aware of the magic's existence in the Alveraz Empire; they often commented that this is akin to destruction itself, rather than a magic.

Though Bradman is aware of his purpose and the existence of this magic, he cannot freely use it — as it's remotely activated by his creator when the time is deemed necessary. However, he's shown to loosely access its powers when his life is in danger — hinted to be the "will of the magic itself". To this extent, this magic is considered to be one of the few that rivals the Summo Lex Magia and Ancient Magics of the Thirteen Otherworldly Virtues respectively. Not surprisingly, this magic surpasses the might of the Death God Triad (, Desu Goddo Toraiado; lit. "Three Reaping Scythes of the Underworld") — serving as part of the reason he's known as the "Ferryman of the Underworld" (黄泉渡し守, Kousen Watashimori), amongst the previous and current generations of the Twelve Shields, by a large margin. It's such that visibility in destructive force is extremely notable by all bearing witness.

Overview
"....And the world's end... begin!"

- Szhikveria forcefully activating the magic sealed within Bradman.

Trivia

 * Typically, this is based on the based in the  in Christian tradition. Also, it's loosely based on the seals of the Seven Great Demon Lords group from the Digimon franchise.
 * Interestingly enough, the author gave another user the translation to a similar concept for Yarrow Aurora, an incomplete character created on his behalf.
 * This is the author's interpretation of the seals used by this character's Bradman.