Paralysis

Paralysis is a  passive ability, unlocked at character level 37.

In-game
While the description in game says 15% chance, in fact it is multiplied by the Proc Coefficient for each particular spell. and other pets have a chance to trigger it as well, even though their attacks normally have a Proc Coefficient of zero; however, channeled skills have 25% reduced chance to do so.

The effect stacks with Wyrdward.

Enhancements

 *  (Legendary Ring): enemies stunned with Paralysis also take 13000–14000% damage as Lightning.