Gas Bladder

"“Your feet bubble and boil as pockets of gas form beneath your skin. These new cavities inflate ever larger, filled to bursting with a buoyant substance that leaves you unsteady on your feet. You find your steps - painful though they are - have become almost lighter than air, and jumping has turned into a kind of floating swoop.” —In-game description"

Effects

 * Dodge Roll Replaced with Swoop