Deep in the catacombs beneath Overwatch Cathedral, there was a cavernous and isolated chamber at the end of a long hallway. The historians of the Holy Foundation could only guess at what purpose it might have held before the Great Breach - some claimed it had been a storage room, some an auditorium, some a shelter, others the containment chamber of one of the demons the ancients had contained before the world was consumed. No sound penetrated its walls, and it took five strong men to open or close the mighty steel door (which not everyone agreed had originally been part of the room) that offered the only means of entrance or exit. Few but the highest ranking members of the clergy knew it even existed, let alone the path to reach it, and none could breach its doors but by satisfying the Ome