Spells! Who doesn't like a bunch of troublemaking spellcasters? Had to read through this one, and I'm glad I did; the spell system is really neat.
Favourite details: I really like that you can use some of your Proficiency to connect otherwise separate nodes -- I see fun opportunities for creative thinking, with the cost of some level of efficacy. And just speaking generally, it's obvious that the spell weaving system is the jewel of the system you've put together here -- it's really cool, and I love that the most important part of the game also looks like the most fun part.
Would be nice to have: I feel like a couple of the Mishaps have the potential to remove the player from the game or narrative for a while. I generally try to avoid that, if I can... partly just because I hate having to miss my turn! Haha. Unrelated -- it would also be great to have everything on one PDF! If we need both sides to play, having them in one document is always something I'll advocate for. (:
Thanks for sharing your game with us!