Lesser Invocation; 2nd
Your unnatural aura renders you partly immune to the ravages of the environment. You remain cool in hot weather and warm in cold weather, as the spell endure elements. Additionally, you radiate a small aura of warmth or cold; allies within 30 feet of you also benefit from this effect. This invocation lasts for 24 hours.
Source: Complete Mage
Level: Clr 1, Drd 1, Pal 1, Rgr 1, Sor/Wiz 1, Sun 1
Components: V, S
Casting Time: 1 standard action
Target: Creature touched
Duration: 24 hours
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)
A creature protected by endure elements suffers no harm from being in a hot or cold environment. It can exist comfortably in conditions between –50 and 140 degrees Fahrenheit without having to make Fortitude saves (as described in the Dungeon Master’s Guide). The creature’s equipment is likewise protected.
Endure elements doesn’t provide any protection from fire or cold damage, nor does it protect against other environmental hazards such as smoke, lack of air, and so forth.
Source: Player's Handbook