Ring of Elemental MasteryLevel 28 Uncommon

Forged from elemental air, earth, fire, and water, this ring gives its wearer the durability to withstand the harshest climates and to bypass the toughest resistances.

Ring Slot        2,125,000 gp

Property

You do not need to breathe. Also, you and your equipment suffer no ill effects from precipitation, high pressure, and ambient temperatures between -50 and 140 degrees Fahrenheit.

Power ✦ Encounter (Minor Action)

Choose one of the following damage types: acid, cold, fire, or lightning. Until the end of the encounter, your attacks ignore 5 resistance of that type.
    If you've reached at least one milestone today, your attacks ignore resistance of the chosen type.

Published in Manual of the Planes, page(s) 157.