Mark of the Storm stuns an enemy after 3 marks; use this to burst down enemy champions or to set up other forms of damage.
Thundering Shuriken deals plenty of damage to harass the enemy lane champion.
Slicing Maelstrom, Kennen's ultimate, is great during teamfights if you can get in the middle of the enemy formation. It provides AOE damage around himself.
Q: How can I make the best use of Kennen's Ultimate?
A: Kennen's Ult can single handidly turn the course of a teamfight. It deals massive AoE damage and can easily stun the whole enemy team. To maximize his Ult, you need to dive right into the middle of the enemy team. Include Zhonya's Hourglass in your Kennen build to keep him alive when you dive.
Q: Is AD Kennen viable, or or should I only play AP Kennen?
A: While AP Kennen is often the better choice, AD is still viable. His auto-attacks can stack Mark of the Storm, especially if he has a lot of attack speed. Furthermore, his Electrical Surge ability stacks damage faster with AD than with AP. That being said, all of his abilities scale with AP.
League of Legends Kennen players will likely find him to be a complex champ to build out properly. You will find that his build varies when he is playing against either well-rounded or homogenous team comps, indicating you should not follow the same Kennen build every single game of League of Legends
The best items to incorporate into your champion's build are: Hextech Rocketbelt, Rabadon's Deathcap, and Zhonya's Hourglass. Those who added these items in their kits had a much better winrate than those who worked towards other item builds for Kennen. Likewise, if you are facing a varied enemy team arrangement, you should really consider grabbing Kennen the Inspiration, and Domination runes. In recent matches, he won the greatest number of his rounds when equipped with these runes.
We set our Kennen build recommendations by analyzing 12,575 recently ranked League of Legends rounds with him in them. We only propose the best winrate Kennen builds that have been built by ranked players enough times for us to advise them. With so many rounds in our dataset, we are quite confident in our suggested builds.