A 30 foot cube of pure air comes into existence. Any creature in the area cannot be affected by poisonous or dangerous gases, and all harmful gases in the area fade away. Any creature which can breathe in the area gains advantage on saving throws against being poisoned. As a bonus action on your turn, you can move it up to 30 feet away. Also, any creature which breathes the air can hold their breath twice as long as normal. If the area is underwater,it creates a 20 foot sphere of air which can be moved and breatheable.