Ioun Stone of AdaptationLevel 21 Uncommon

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

Property

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.