Magister's relationships

Heroheim
Though Heroheim was Magister's immediate successor as Guild Master of Genesis, the two had a complex relationship, as it has been suggested by several people, Heroheim included, that while Magister may have genuinely respected Heroheim, it's unclear whether or not he particularly liked him or not.

Magister's persisting influence after Heroheim's ascension as Guild Master pressured the latter to recruit new generations to Genesis, as he felt (quite accurately) that he would never be able to rally the guild around him as Magister was able to.

ShortnNerdy
No different from anybody else, Magister had a complex relationship with Shorty, though unlike most people, Magister early on earned Shorty's respect for his character and devotion to transperency and balance over allegiences to guilds or factions.