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.
Kennen is a BEAST. Nice damage, AOE Stun, great range and the little trickster has some great ecape manuevers for survivability. Grab a Doran's shield with a health potion first. I start out in a 2v1 lane when I can, harrasing them with my passive + W. Once I hit lvl 2 I can throw in the shruiken for even more aggravation. You can usally get a double kill at level 6 with your ult + ignite. At this time you can go back to the shop and pick up your sorcerer's boots. Go back to your lane and call for an assist to take out your first tower, once thats done it's time for the real fun. Roll around the map working with your team whenever your stun is up to take out a few heroes and work towards your rylai's scepter. At Level 11 you should have this and a blasting wand to work towards your Abyssal scepter, Once you get that your ultimate just rocks people. After you get a few more kills and you have your Zhonya's Ring you cn initiate fghts by jumping into a throng of enemy heroes with your ult and your E skill and your ultimate and hit zhonya's ring, Watch as your teamates wreck the other players with your stun active and you invincible. Greatest move ever. If the other team is stacking MR then you can switch out your dorans sheild and get a void staff for even more MP. This build has never failed me if your team is working nicely together.