I've long had difficulty trying to put this into words, and trying to find reliable sources that I could look into to inform me on how to move forward with my writing. I'm hoping someone out there more learned than I can point me in the right direction.
I want to create a magic system, but I don't want to create a magic system based on the more cliche offerings you find in video-games or YA fantasy, stuff that hinges on, say, four basic elements, etc. I have two very specific parameters I'm trying to work within to make this system and I hope it helps explaining to you what I will need to move forward:
The magic system is at least somewhat based on the real-world origins of magic, culturally speaking. I am trying my hardest to find some reliable historical accounts that aren't heavily biased or religious in nature that can tell me, perhaps from an anthropological standpoint (or any other scientific one, I'm not picky) that I can base this magic system on. Like, for example, I've found some articles explaining how some formal practices as we know them may have originated in Egypt, and the idea of magic and magicians might have Persian roots, etc., but I don't know how trustworthy they are. This also includes the rationale behind its practice, if possible: like, say, how practitioners used it, why they carried out certain rituals to do it, the context of and understanding behind things like spells, religious connotation, where people actually thought magic came from and what it was, etc. Basically anything that gives me a timeline to work with, and a greater understanding of where our modern understanding of magic came from.
The magic system is not showy, based on visuals, and is almost terrifying. I hesitate to list examples, but I like how some older films used to present the idea of magic, at least visually. I liked, for example, how it was depicted in the movie DRAGONSLAYER, or maybe the better example is in LORD OF THE RINGS, especially in the battle between Saruman and Gandalf: there aren't laser light-shows, it's invisible, it's subtle, it's even scary and transformative, more upsetting and less convenient than stuff you might see in WORLD OF WARCRAFT, etc. I feel like there's more power in the less-is-more depiction here. I don't know that necessarily helps anyone give me an answer, but it is part of my overall process, so...including it here.
I hope I've made it clear enough: if not I'm willing to answer questions to hone in more on a clearer question. Please let me know if you have any other questions that will help you answer the question and I will do my best to answer. Thank you.