The Grimoire of Mystery

This story has spiralled past my original goals into something massive. So massive, in fact, that I've had to repost it from it's original spot Over here to my own subreddit. So let me give a quick primer on how to play.

• If the branch you're on is missing a link that you'd like to explore, leave a comment and I'll write it as soon as possible.
• If it says "something else", feel free to leave other ideas.
• Please leave a comment if you see any of the following errors. I'll reward gold for the first person to find any of the following mistakes!
  • a broken link or missing link
  • a link that does not lead to this post in r/Lexilogical
  • or a story post that is present on the r/WritingPrompts thread above and not here
• To discuss this story or leave theories on what you think will happen, leave your comments over here.