The material below is Open Game Content from a 3PP Source
School transmutation; Level cleric 5, inquisitor 5
Casting Time 1 standard action
Components V, S
Targets one melee weapon
Duration 1 round/level
Saving Throw Will negates (harmless, object); see text; Spell Resistance yes (harmless, object)
This spell makes a melee weapon deadly to undead. Any undead creature with HD equal to or less than your caster level must succeed on a Will save or be destroyed utterly if struck in combat with this weapon. Spell resistance does not apply against the destruction effect.