SPECIAL NOTE: The Mobius Tower is time-trapped. Most of the people and things in the Mobius Tower are in a different time-frame than the PCs. This does not affect the PCs in any way. Everything in the Mobius Tower (except the listed monsters) is moving VERY SLOWLY. A thousand years could pass before the PCs could see any of the people or things in the Tower move. These objects will seem to the PCs to be “frozen” in both time and space. Time-trapped people and things cannot be moved or damaged unless their time-frame is changed to the PCs' time-frame. There are only two ways of doing that:
1. Teleport the object into room L4a.
2. Change the object's time-frame with the Medallion of
Time found in room L3f.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.