Please make Kennen a "support" otherwise change his "role" to Marksman.
There is no reason why this champ who was meant to be a Mage, being an attack speed steroid that's almost better than some other ADC's is just ridiculous. He doesn't even have kill pressure as a mage since he has:
- terrible waveclear
- no ap damage at level 1
- takes too long to scale
- has no armor after two seconds which helped him survive his ult dive, now he just gets deleted
- terrible range
- terrible base damage
and overall, anything equivalent is just overall better. Want attack speed steroids? Play tristana, want burst with a stun? Play any of these champions:
Chain stuns is pointless with AP when Tenacity exists, I might get downvoted to hell but please just make this champion a support, he has practically the same damage as Zac the first 25 minutes but can't build tanky OR support. There's almost no way to get fed off of playing Kennen since he's essentially a worse version of Kayle right now, with 
.
<end of rant>
is more important because of minions, towers, baron,etc that and tabi is the only real relief you can get against any basic attacker aside from 
or other overly expensive items.
who would also increase 
`s damage