Rodbane

Rodbane temporarily prevents the wielder of a rod, staff, or wand from using the item's powers. The wizard casts the spell upon a character in physical contact with a rod, staff, or wand. If the subject has more than one such device, the caster must specify which one the spell targets. Should the wielder fail a saving throw vs. spell, the device in question will not function for that character for 4d4 rounds. Wand wielders save at -6, staff wielders save at -4, and rod wielders save at -2. Rodbane has no effect on other magical items.