Pale gray or blue lizard that delivers electrical shocks

A Shocker Lizard has a pale gray or blue underside and a darker hue on its back. It is about 1 foot tall at the shoulder and weighs 25 pounds. This lizard is typically found in warm marshes. Once per round, a shocker lizard can deliver an electrical shock to a single opponent within 5 feet. This attack will stun (paralyze) the target on a failed save vs. Death Ray for a total of 2d8 rounds. Whenever two or more shocker lizards are within 20 feet of each other, they can work together to create a lethal shock. This effect has a radius of 20 feet, centered on any one contributing lizard. The shock deals 2d8 points of electrical (lightning) damage for each lizard contributing to it (maximum 12d8); a successful save vs. Death Ray reduces the damage by half. A shocker lizard relies on its electrical abilities in combat, and tends to bite only after attempting to shock an opponent. Shocker lizards can automatically detect any electrical discharges within 100 feet. A solitary lizard almost always flees, but if other shocker lizards are nearby, it will "home in" on its comrades' discharges.