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===The Cults of the Thousand Sons===

*{{Main|Cults of the Thousand Sons}}

Every legion venerated their primarch in some regard, but to the Thousand Sons Magnus was their literal saviour. With his arrival they were not only (apparently) saved from the horrors of physical degredation but also presented with the person who could teach them how to master their developing psychic abilities. Drawing from his experiences on Prospero, Magnus instituted his [[Cults of the Thousand Sons|Cult system]] within his legion, five teaching institutions that would allow his warrior-scholars to expand their knowledge, principally from him, at his position as master of all the cults; the rank of ''Magus''. From this position atop a pyramidal teaching structure Magnus was able to direct and control his legion's psychic and philosophical development; as the most knowledgeable, powerful and as their genetic forefather and saviour, all Thousand Sons looked to him for example and guidance.{{Fn|3f}}