Inaccurate?

Rend Shadow Weave

(Champions of Valor)

Abjuration
Level: Cleric 3, Sorcerer 3, Wizard 3,
Components: V, S, M,
Casting Time: 1 minute
Range: Close (25 ft. plus 5 ft./2 levels)
Effect: One 10-ft.-cube area of the Shadow Weave
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No

You damage the Shadow Weave, creating an area of dead magic that only affects the Shadow Weave rather than the Weave.
While you have this spell prepared, you get a +2 competence bonus on caster level checks to dispel Shadow Weave effects.
Material Component: A moonstone worth at least 50 gp.