
Hot Capicola |
It's not the most cost effective way of getting water breathing, or the easiest to use, but if you can use it, a scroll of Alter Self. Change into something with a swim speed, which because of the rules for Polymorph spells, also allows you to breath while swimming. Add on a +2 to Str/Dex for size, and possible natural attacks, maybe even Darkvision. Not bad for a 2nd level spell, and something that doesn't become useless if you never come across large bodies of water again.
Lizardfolk is my form of choice for water, though they don't get Darkvision, so having a magical light source definitely helps. Which since it's a Bard/Wizard spell, hopefully you can cast light.
Problem with polymorph is, unless you are a druid you will likely lose a lot of your class functionality. No weapons, probably no spells, no armor, etc.