Ahhhh I love all of this. Similar to what @BairnSidhe was saying, the text of the letter indicated that pixie wings molt every so often, and the remains of their molted wings have some valuable magimystical properties. Similarly with the fae dust - apparently it can be “bestowed” or given on purpose, and that gives it more power than just collecting it, but there doesn’t seem to be anything wrong with just collecting it from where you find it, either.
And in terms of how similar or different Neithernor is overall from the mundane, I think a certain number of things have to be similar. For example, all of us who’ve been there have been able to breathe, so either A) Neithernor has an atmospheric composition containing oxygen similar to that of the mundane Earth, or B) Neithernor has some sort of magiqal replacement for such a thing that allows us to function in a similar way, but we have no idea what it is or how to measure and study it. Actually, now I’m kind of hoping it’s option B - maybe that’s part of what makes people “Neithernorian” the longer they stay? Some sort of magiqal property or substance that our bodies adapt to and eventually evolve with over time?
And, to be fair, I don’t even really know whether Obenhedge or the Brachursis (side question: what is the plural of this? Brachurses? Brachursi?) exist in Neithernor, themselves. I’m just guessing that they could, because the key groupings suggested plants, animals, and constellations that weren’t familiar to us at all. Maybe some, like the Fraylily, originated from the Fray and were there to begin with? We don’t know much at all about the Fray, so maybe Neithernor is much more similar to it than to the mundane, or was at one time. And some things sprung up over time that were truly unique to Neithernor, while others were brought through from the mundane and, like some of you were saying, evolved into something more Neithernorian under the influence of Magiq.
But specifically on the subject of pixies: I’ve have a few theories given what we know of Neithernor. It’s possible Neithernor’s creatures are the source of our legends, but that seems less likely to me. Given the editing that took place in the Book of Kings - pardon me as I continue my abiding crisis over the discovery of two. parallel. existences. - I do wonder if any of the widespread legends we know (like dragons or fairies) are themselves altered versions of better documentation on magiqal animals from the Book of the Wild. And in that case, what does it mean for something in Neithernor to be called a pixie by PRSFNE researchers? Did older magimystics see creatures that looked like stories they knew about pixies and named them because of that? Do they have blue skin? How big are they? Do all of them have wings? Are there other creatures we think we know but which are very different in Neithernor?
My head hurts now. I’m gonna go doodle every way I imagine pixie wings might look until I have to do boring mundane Excel work again.