One of the things left inside the Talos Arsenal. Mobius books have no end, and the volume goes back to the beginning with out the reader realizing it, except the contents change completely so the reader never gets bored. To the contrary , her intellectual curiosity can keep her reading for ever. However, there's one chance out of all the infinite possibilities of something going wrong with the print. To guard against that possibility, the Nobility that trapped the Destroyer in the sealed sanctum put a whole library of mobius books in there with it.