Ioun Stone of Adaptation
This clear crystal floats in the air above your head, providing you with sustenance and durability against certain adverse effects.
Head Slot 225,000 gp
You do not need to eat or drink. Also, you and your equipment suffer no ill effects from ambient temperatures between -50 and 140 degrees Fahrenheit or from precipitation.
Power Encounter (Free Action)
Use this power when you are affected by ongoing damage. The ongoing damage ends.
Published in Manual of the Planes, page(s) 156.