Random Magic Rod
This device negates the spell or spell-like function or functions of magic items. The wielder points the rod at the magic item, and a pale gray beam shoots forth to touch the target device, attacking as a ray (a ranged touch attack). The ray negates any currently active item function and has a 75% chance to negate any other spell or spell-like functions of that device, regardless of the level or power of the functions, for 2d4 rounds. To negate instantaneous effects, the rod wielder needs to have used a ready action. The target item gets no saving throw or means to resist this effect, although the rod can't negate artifacts (even minor artifacts). The rod can function three times per day.