Lore masters who hold (or seek) all the keys to all the doors, the Mysterium seeks out knowledge for its own sake. The Mysterium comes from the remains of Alae Draconis (or Dragon's Wing), the research and development branch of Atlantean society. Now they seek to reclaim the lost lore of the world and remember the lessons of fallen Atlantis.
Given their predisposition for finding knowledge it would be logical to assume that mystagogues and Guardians of the Veil would have a natural animosity to each other, and indeed the two groups have heated debates over the fate of particularly interesting subjects. However, the Mysterium does make a point of making sure querants are worthy of receiving secrets in question, which mollifies the Guardians somewhat. The Mysterium mages are keenly aware that some secrets were hidden for a very good reason. In some cases, the object of the search was not so much 'lost' as 'contained'; even the Lords of Atlantis were faced with powers and creatures they could neither tame nor destroy, and the only answer available was to simply imprison it until such time as a more permanent solution could be discovered. The secrets of the Mysterium aren't made free to the general public at large. There is usually a price to be paid, more often than not including tests of discretion and loyalty as well as requests for goods and/or services. Knowledge without wisdom is meaningless, and few hold this truth as deeply as the Mysterium.
