Necromancy [Cold]
Level: Cleric 1, Druid 1, Ranger 1
Components: V, S, DF
Casting Time: 1 standard action
Range: Touch
Target: Creature touched
Duration: 1 hour/level
Saving Throw: None
Spell Resistance: No
You grant the target the ability to survive in thin air, conferring a +20 inherent bonus on Fortitude saves to resist altitude sickness as well as saving throws to resist becoming fatigued due to altitude or thin air.
Source: Frostburn, page 93.