This talisman is enchanted and empowered in such a manner than as you receive it, it is an open vortex.  A sacrifice of one’s own blood is to be offered upon the talisman to bind you to the Demon. Made upon individual request, the talisman can be bound to any Archdemon of the Maergzjiran Cabal’s pantheon, the Demons of the Goetia, Demons of the Ordo Ascensum Aetyrnalis, or from the Infernal Hierarchy. Once the bond has been formed between the Demon and the Mage, a great many things happen. The dominion of the Demon becomes that of the Mage.
Example: Zazazel, the Buried King and is a lich and master of necromancy. A Disciple with the Grand Demonic Apostle Talisman then begins to have a resistance to illnesses and disease, his life extending, his prowess over magick growing monumentally and the power to innately conjure and speak with spirits is reflexive. This great gift is something offered to magi by these distant Spirits and Demons and is something that all magi should possess.
When acquiring the talisman, please leave a note with the demon you wish this talisman to be bound to.