How do you do that purple lightning thingy

This is possibly the best way I've heard Thunderlord's Decree described. Purple Lightning Thingy. Upvoted.

As for proccing it, Cocho already put up how to do it, so just refer to his comment.

Can we get a Petition to rename Thunderlords to Purple Lightning Thingy?

It is in your masteries. Its the last in the cunning tree. https://gyazo.com/8606e5bd19df8a548f566f9c65bd7424

You hit the opponent 3 times and it goes off automatically.

You have to get the Thunder Lord to decree something for you.

This purple lightning thingy?

https://www.youtube.com/watch?v=PCLYxuC5ic0&feature=youtu.be&t=23 https://i.ytimg.com/vi/6FJWU_F_q5s/hqdefault.jpg

Aye, that would be Thunderlords Decree. http://leagueoflegends.wikia.com/wiki/Thunderlord's_Decree

Lulu approves of purple lightning. Especially the purple part.

Are you talking about thunderlord's decree or Kennen?

Kennen? The little purple ninja man who throws shurikens at u?

Thunder lords?

run it down mid and youll proc the purple lightning thingy 1000 times at once

This title reminds me of Urf when you have those special icons that give kill animations. "WHAT SINCE WHEN DID SONA HAVE A GIANT RED DEATH LASER THINGY, YOU MUST BE HACKING". I avoid telling them on purpose because its kinda funny when think its the thing that killed them.