A schematic I drew for an RP plotline in WoW. In character, it was drawn by Thallana, my spooky scholar. It represents a detailed design for a modified arcane vault designed to capture Void entities and siphon their energy (Blood Elves are happy). The toroid chamber inside is covered in an intricate labyrinthine pattern. If the Light sees one path as true and shuns all others, while the Void sees all possible paths, then a way to trap a Void entity would be to put it in a maze where all paths loop back to its center, forcing it to go in circles forever. This is the principle on which this prison operates. Thallana is all too familiar with how difficult it is to escape from such a thing.