Inaccurate?

Disrupting Weapon

(Player's Handbook v.3.5, p. 223)

Transmutation
Level: Hunter of the Dead 4, Cleric 5, Knight of the Weave 5,
Components: V, S,
Casting Time: 1 standard action
Range: Touch
Target: 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.

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