This build is pretty baller. It's the first build that I've done really good with Kennen. All the Crit and Attack Speed make this build crazy. The only thing that I do differently is try and get that infinity edge before the last phantom dancer. The blood thirster greatly increases your survivability with all the life steal. I did nab a life steal scepter towards the beginning after I got the boots and that helped keep me in the mid without pots. AD/AS Kennens are the best! If you use his skills to stun and harass you'll own hardcore. Good build!

WOW i went 14/2/10 with this build thnX its nice not to just go AP all the time.

BTW i seen their are new Energy runes migh t want to look into them.