-Hello guys , I'm Gamermancz and this is my first guide so be nice please.
-I´m playing long time with Kennen and he is awesome. I never played him on AP so I made my own AD build.

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Pros +Ranged Champion +Stuns +Fast movement +Dont need items to be useful +Useful in all lines

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Cons -For some players its hard to use Thundering Shuriken -Low HP

For Summoner Spells take and

If you have healer on your line use and

Mark of the Storm(passive)- Kennen's abilities add Marks of the Storm to opponents. Upon receiving 3 Marks of Storm, an opponent is stunned and Kennen receives 25 energy. Has a diminished effect if done twice within 7 seconds.

Thundering Shuriken(Q)- Kennen throws a fast moving shuriken towards a location, causing damage and adding a Mark of the Storm to any opponent that it hits.

Electrical Surge(W)- Kennen passively deals extra damage and adds a Mark of the Storm to his target every few attacks, and he can activate this ability to damage and add another Mark of the Storm to targets who are already marked.

Lightning Rush(E)- Kennen morphs into a lightning form, enabling him to pass through units. Any enemy unit he runs through takes damage and gets a Mark of the Storm.

Slicing Maelstrom(R)- Kennen summons a storm that strikes at random nearby enemy champions for magical damage.

For runes I´m taking attack damage and attack speed.
Mark:
Greater Mark of Attack Damage - 6
Greater Mark of Attack Speed - 3
Seal:
Greater Seal of Attack Speed - 4
Greater Seal of Attack Damage - 5
Glyph:
Greater Glyph of Attack Damage - 9
Quintessence:
Greater Quintessence of Attack Speed - 3
-Note that this runes are only for level 20+ (Runes Tier 3)

• 1 Doran's Blade -Best starting item.
• 2 Berserker's Greaves -You need attack speed.
• 3 Wit's End -Another item whit good attack speed and magic damage.
• 4 Black Cleaver -Attack speed and damage.
• 5 Frozen Mallet -More HP and slowing enemies.
• 6 Phantom Dancer -Attack speed, crit and movement speed.
• 7 Bloodthirster -In late game whit good damage and attack speed you need some life steal to keep you alive.

Try to run in team fight whit "E" and then use "R" when your ulti hits your enemy use "W" it will stun all players in range. Kennens ulti can be used in good premade whit Galio, Katarina, Gangplank and other champions whit AoE ultis.

This was my first guide, please leave a comment and vote.

Special thanks to: JhoiJhoi