Gaseous Sack

"“You try to take a step forwards, only to find that your legs are not responding. Looking down, you find that your lower body has been subsumed by a large distended sack of blotched flesh, rippling from the waves of gas that it contains. With effort, you find yourself able to expel the gas and propel yourself up into the air, the sack taking some time to refill afterwards.” —In-game description"

Effects

 * Dodge Roll Replaced with Float
 * -20 Health