Ooh, I really like the idea of soaking the parchment in various potions! Or perhaps it could be added to the ink? I hadn't thought of that sort of thing. Thanks!
I also quite like the idea of the Impervius and the stealth one. Impervius is something I can see them adding after the map has been finished as one of them realises it could get wet/it does get wet or leaked over.
Thank you very much for your ideas! If anyone else has any, it'd be great to hear them.
Wonderful avvie by psijupiter. Totally brilliant and amazing banner by Julia/the opaleye!