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 difficult character to build out properly. You'll see that his build is modified when he is fighting either well-rounded or highly focused team comps, indicating you shouldn't select the same Kennen build every single game of League of Legends
The most essential items to incorporate into your champ's build are: Hextech Rocketbelt, Rabadon's Deathcap, and Shadowflame. Those who included these items in their builds had a better win rate than those who used other Kennen builds. Likewise, if you are fighting a well-mixed enemy team comp, you should strongly consider getting Kennen the Domination, and Sorcery runes. In recent matches, he won the largest fraction of his matches when using these runes.
We established our Kennen build guidance by examining 19,805 recently ranked League games with him selected. We only advise the highest winrate Kennen builds that were built by ranked League players enough times for us to advise them. With so many matches in our dataset, we are confident in our provided builds.