|"The Castle" by Viktor Titov|
The Gate House sits on a weak point that connects Otherway's world to the Radiance of the Deep Horizon. The entire Castle Kingdom is a prison. It's walls were purpose-built by the Unknown Architects using sacred geometries. Its very structure creates numerous dimensional sink holes and cellae designed to capture and contain the inimical beings from Beyond. These beings materialize through the weak point and then find that they can go no further into the world.
Of course, the Radiance these beings bring still needs to go somewhere. The walls of the Gate House slowly drain Radiance, channeling it through the Castle Kingdom's miles and miles of stone. This bleed manifests as various new Arcana whose glowing sigils can be seen thoughout the Gate House.
An army of Copyists and Visiting Scholars catalogs these representations of the sublime. The finest are assembled into divinatory decks, each one unique.
Eventually even the most energetic cella grows cold. At that point, the chamber is opened and the bones of a god are harvested to make relics.