Disrupting Weapon

SchoolTransmutation
LevelClr 5
ComponentsV, S
Casting Time1 standard action
RangeTouch
Duration1 round/level
TargetsOne melee weapon
Saving ThrowWill negates (harmless, object); see text
Spell ResistanceYes (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.