This right here is my first guide to a LoL champion. I will be covering my very own 3v3 build for Kha'Zix; my currently favorite champion.

I will not be covering Runes for this guide, as it is mostly meant for those below the summoner level of 20 and thus cannot get the greater runes, glyphs etc. (like myself)

I recommend going for all out physical damage, as all his abilities scales the more damage he has.

I built the masteries so that you run as much damage as you can possibly reach at a champion level of 18. Also health and a little armor for semi-increased survivability.

Main reason I picked damage items this ruthlessly is because if you are attacked or chased by an enemy champion which is isolated from other enemies (champions or minions), you can easily quickly turn around and leap your enemy chasing you, applying a quick Taste Their Fear to them which briefly deals over 800-900 damage with all your items, then a quick Void Spike for yet another 500+ damage and healing yourself as well. Your Unseen Threat passive will then deal yet another 500+ damage on your next basic attack (if you didn't chose to evolve Spike Racks). If you trigger your ulti to regain Unseen Threat once again, you will once again deal over 500 damage (unless you crit; easily a 1000+ hit). Most champions will be down far before this point in the fight unless you are up against a tank champion. Though, after this, you can apply yet another Taste Their Fear and a Void Spike to finish it off if you hadn't already. Against an AP Carry, you can easily kill them in less than 3 seconds, and jump on to a new target.

I would recommend maxing your Taste Their Fear first of anything, as well as evolving it first after you gain your first ulti ability. This will make your ability deal further damage and have an increased range to attack on.

Your 2nd evolve should either be Spike Racks or Wings. While Spike Racks will affect your amount of damage in a fight, as well as how much you are healed, wings can turn a team fight quickly. Each time you either assist or get a champion kill after you have used your leap ability, it will instantly refresh and you will be able to either leap out of the fight to survive; or leap onto your next enemy to fend them off as well.

Though evolving wings is a great idea, I would really recommend maxing it last, as all it is really good for is to catch up with enemy champions, or get out of a fight. Leveling it up won't do as much in a fight as what the other abilities would.

I would never chose to evolve Camouflage. That is because most of the time, you will never really need to use the last trigger of invisibility; due to your already massive damage and the fact that instead of escaping a fight with your ulti, you could rather just leap out of it all.

My order of priority in terms of evolves:

Claws --> Wings --> Spike Racks.

My order of priority in terms of ability upgrades:

Taste Their Fear --> Void Spike --> Void Assault --> Leap.

Ignite can be replaced with Exhaust to slow your opponent for an easy first blood, or simply for chasing an enemy champion to hit them with the finishing blow.

Flash is used to get out of combat if your leap doesn't do the trick. If you are not high enough summoner level for this spell, a substitute could be Ghost, which will help you escape as well; and even help you chase after an enemy.

PROS

Incredibly massive damage
Lots of natural escape routes due to his abilities
Superior farming ability
Unbeatable in 1v1 combat at level 18
Easily solo's dragon
Can leap over obstacles to finish of a hurt champion
Good life steal

CONS

Very low max amount of health
Struggles to kill an enemy that is not isolated
Usually targeted first due to his overpowered abilities and low health
Incredibly sexy

Thank you for reading my guide, and I hope you liked it. This build has helped me tremendously in my many games as Kha'Zix, and I think it will help you as well. I also ask you to actually try out the built before you rate. I think you might find it to be good.

- MdKp Spitfire (EU & Nordic) :)