Potion of Water Breathing
A bubbling, salty infusion that tickles your nose without any scent to mark it's passing.
Duration: 1 hour
Use: Imbiber is able to breathe normally underwater, without exterior aid. (It is left up to the GM if they grow gills, or just magically can breathe, as well as to whether or not the player can still breathe air while under the potion's effects.)