Knights of Cygnus Skill Tables

I'm not sure, I think how it works is your initial hit "electrifies" the monster for the time duration noted, and then any monsters that draw near it are hit by shock damage (similar to chain lightning.) If someone has a video that might help.

If that is true, then what are the times between hits? What I think is that this skill is a buff, which, when you use an attack, hurts surrounding monsters. What do you think?