That pain in the ass Mystra, always getting punked by someone or other and then everyone else suffers for it... like having all their flying cities fall to the ground at the same time because all the magic in the world shut off.
Much less importantly than my stupid joke, I think that maybe should have been "Netherese" there, with how you were asking about it. It's probably like saying "Egypt ruin?" instead of "Egyptian ruin?" I dunno. Been a while, my only real exposure to that part of Forgotten Realms came from the Neverwinter Nights games. Nothin' quite like riding a fallen flying city back up into the sky just to knock it back down while you're still on it so some ho can't use it to take over the damn world or something.