League of Legends Kennen players will likely find him to be a dynamic character to build out properly. You will see that his build changes when he is fighting either diversified or homogenous team compositions, meaning you shouldn't take the same Kennen build every game of League of Legends
The most important items to use in your champion's build are: Hextech-Raketengürtel, Rabadons Todeshaube, and Schattenflamme. Those who included these pieces in their builds had a better winrate than those who went for other item builds for Kennen. Similarly, if you are fighting a mixed enemy team arrangement, you should strongly consider getting him the Dominanz, and Zauberei runes. In recent matches, he won the largest fraction of his matches when equipped with these runes.
We established our Kennen build guidance by analyzing 19.805 recently ranked LoL games with him selected. We only advise the highest winrate Kennen builds that have been used by ranked LoL players enough times for us to suggest them. With so many rounds in our data, we are quite confident in our suggested builds.