Stalwart Pact

Races of Destiny (RD)Supplementals (3.5)
School
Evocation
Casting Time
10 minutes
Range
Touch
Target
One willing living creature
Duration
Permanent until triggered, then 1 round/level
Saving Throw
Will negates (harmless)
Spell Resistance
Yes (harmless)

This spell allows the target to enter a binding agreement with a deity, who provides a measure of protection when the need is dire.
Once this spell is cast, the pact remains dormant until the target is reduced to fewer than half of her full normal hit points.
The target immediately gains 5 temporary hit points per caster level, damage reduction 5/magic, and a +4 luck bonus on saving throws.
The hit points, damage reduction, and saving throw bonus disappear when the spell ends.
XP Cost: 250 XP.