Extra Lung
Item 8Air Invested Magical 
Source Rage of Elements pg. 74Price 500 gp
Usage worn cloak;
Bulk L
An extra lung is a waterproofed bladder of air worn in an underarm holster, connected to the wearer's nose by a long tube. You can use it as a source of air instead of breathing in the air around you. It can hold 5 rounds' worth of breathable air, and can be refilled if the
extra lung is left open for 10 minutes in an environment with suitable air.
You can switch to breathing from the
extra lung at any time, without using an action. You can use air from the bladder following the rules for
holding your breath, but you can speak without losing the air from the extra lung. When you lose air at the end of each of your turns, choose whether you use breath you're holding or air from the
extra lung. Speaking causes you to lose breath you're holding but doesn't affect the air in the
extra lung.
Activate—Cough Up
[reaction] (
manipulate);
Trigger You breathe in an
inhaled poison or other inhaled affliction;
Effect You cough the poison or tainted air into your
extra lung, immediately attempting a new save against the effect. The air inside your
extra lung becomes fouled, and you re-expose yourself to the inhaled affliction if you breathe it in. The
extra lung is cleansed of any poison it contains every day at dawn.