Another point of discussion regarding Theurgs is the possibility to cast resurrection type spells or similar.
In the original system of Symbaroum, they are not capable to resurrect people, and the use of this kind of mystcal powers or rituals are seen as blasphemous regarding the doctrine of Prios (only necromancers or Dark Lords practice this kind of magic).
I suggest that Theurgs should not have those kind of spells at their disposal. (ex. Revivify)