I've only just started the demo- but I'm enchanted already! I'll make sure to leave a full review when I've finished! However, one thing I've noticed is the Grimoire- the symbol on the cover of it, and the symbol for "darkness", is the Star of David. This doesn't quite sit well with me; surely a five-pointed pentagram could serve the same purpose that the six-pointed Star of David was intended to? I think it may even be better for it, as it is already associated with the occult/magic, rather than the Star of David which is associated with modern Jewish identity. If you wish to avoid religious symbols entirely (as the pentagram is used by some Wiccans), a triskelion may also be appropriate?
Edit: I see this was already pointed out- my bad, I should've read on!
Also I did notice two areas that could be re-worded if you want??
"...the more in the instruction of an art..." perhaps 'an emphasis in the instruction' or 'better for the instruction of' because the sentence is a tad unclear
"In that case, the Lord President..." i'm probably just picky, but 'Other than that' or 'in addition to' would be better suited, as "in that case" usually references an alternate or exclusion, rather than something that is in addition to something else
I don't mean to come off critical, they were just two moments that took me out of the game so I thought i'd mention it- sorry this comment got so long ':(