Additionally, if two or more shocker lizards are within 20 feet of each other, they can work together to create a lethal shock once every 1d4 rounds. This effect has a radius of 20 feet, centered on any one contributing lizard. All creatures within that radius take twice this amount of electricity damage for each lizard contributing to the shock. A Breath save (-1 for each additional lizard beyond the first) halves the damage.