https://worldbuilderblog.me/2016/07/14/common-potions/
Potion Common
This murky oil reeks of the sea and can be poured over the body of one Medium or smaller creature. Applying the oil takes 1 minute. Once applied, the creature gains a swimming speed equal to its walking speed for 1 hour. During this time, the creature has advantage on Strength (Athletics) checks made to swim.
Created for Dungeon Masters and Game Masters, World Anvil has everything you need to build your own homebrew RPG campaign setting, and run your games, either online or around the table!
Take the first step. Create your account. Your world and characters await!