Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is an Ability Power Kennen build.
I find this build works best when either solo'ing mid, or solo laning 2v1 if your team has a jungler.
Due to Kennen being so squishy unless you are a very confident mid laner, I would suggest being very defensive early game,
No matter if you are 2v1 in a lane of mid laning, you will want to be fairly defensive, especially before level 3 when you get your Lightning Rush. Annoy your opponent(s) by throwing your Shuriken anytime they get close, as soon as you hit level 2, ALWAYS follow your Shuriken with an Electrical Surge. At level 3 when you get your Lightning Rush you can push them towards their turret more, if they attempt to persue you, use lightning rush to quickly escape. Continue this until you have hit level 6, at level 6 once you have Slicing Maelstrom and if you have managed to get your oppponent(s) close to 1/2 health, you can engage using Lightning rush, activate Slicing Maelstrom, followed by Electrical Surge, and when they try and run throw a Thundering Shuriken at their back usually finishing them off.
I like to consider this stage the ganking stage for a mid laning Kennen. Especially if you have a few stacks on your Mejai's, be sure your teamates know you are coming to help with a gank, being sure to keep an eye on mid at all times. Working with your team, taking turns ganking top and bot, you should be able to quickly get some gold and stacks on your Mejai's.
Do not get over confident though, Kennen is still very squishy even though you can output alot of damage, so be mindful of your health, if you have less than half it would be the best idea to recall and heal, you dont want to risk loosing your stacks at this point.
By now you should have your Zhonya's Ring which combined with the stacks you should have on your Mejai's you should typically have atleast 400+ AP right now. This is the point where you will want to stay grouped with your team, your role at this point is basically a nuker, have your tank(s) initiate a team fight, and you lightning rush in during the confusion, throw off your Slicing Maelstrom, followed again by Electrical surge, and using Shuriken to finish off stragglers.
During these fights if a large portion of your team gets killed, and there are enemies that you know you cant kill within 1-2 hits, Lightning Rush out of there, your stacks are very important so try and keep from dying at this point in the game.
I will update/add information to this as I test out other builds.
Please leave comments and rate this build.
Suggestions are always appreciated.
'Honor and Glory'