Some very cool ideas. I enjoyed the cat-summoning lock on the spellbook. Much more interesting than simply finding a book.
I would have liked a very brief introduction to give me some idea of that kind of dungeon to picture. Getting straight to the point is great, but a high level overview of what and where this dungeon is would be nice.
I think all the mysterious, magical stuff in the dungeon would make for a very enjoyable old-school dungeon crawl.