Tesseract Vaults

A Tesseract Vault is a vast, monolithic, and near-indestructible Necron construct built specifically to contain a Transcendent C’tan, a mighty C’tan Shard of near-omnipotent power that was once one of the Necrons’ deadliest foes. These Transcendent C’tan, nothing less than the amalgamation of dozens or even hundreds of lesser C’tan Shards, are of such size and indomitable will that they are too powerful to be contained within the extradimensional intricacies of a Tesseract Labyrinth, and a Tesseract Vault serves as both a prison and a conduit for their power instead.