Here are some of the spells that Brent is talking about, and the two times that Thistle passed out (although that second one might be attributed more to physical than magical exhaustion). This might also add some additional context to some of the things Wu started to say that one time.
This Magic 101 Conversation ended up being a lot shorter than I remembered, we only have a handful of pages left before we get back to the meat and potatoes of the story.