This potion is made by using Bird + Fairy in the cauldron. This potion doesn’t have any stackable effects.
When you use this potion you will lift a few feet off of the ground & have the ability to float & levitate around the map.
You don’t go very high, so this won’t be a helpful potion to get to high areas. It is helpful for getting across the ground slightly faster, so it does have some use.
You might be able to combine it with a Speedy Potion to make the rate at which you float along the ground faster.
This Potion is spell number #66 in the potions book.