User blog comment:Ozuar/Kha'Zix - My Conundrum/@comment-6435632-20130410185338

I'm no pro Kha'Zix player, but he's my favorite too and I've been practicing with him a lot. I used to have the most success at evolving his Q, E, and R in that order, while maxing Q, W and E in that order.

The thing is you have to understand how brutally powerful Kha's evolved Q is. If isolate opponents, and they aren't at full health, it will completely destroy them. The AD scaling on his Q is also excellent. Inversely, it doesn't really gain nearly as much damage from leveling it. Therefore Q is the first thing I evolve if -- if I can -- and the second thing I max.

I max his spikes first because they help in every situation, whether you're doing well or badly (and evolving them doesn't increase their damage against single targets beyond the application of Unseen Threat). I evolve either them or his scythes first, depending on how well I'm doing; if I have already gotten a kill or two, then I get his Q; I'm already doing enough damage and getting fed enough for that execution power to come in handy. I will also do this if I'm reasonably sure I will be able to snowball. However if I'm having issues, I evolve his W for ranged poking and minion farming; it turns Kha'Zix into the game's best pusher. It can also pick off fleeing targets at low health with its increased range and radius, and I've actually used it to kill people I couldn't even see because I knew it covered the entire area they could possibly be.

Regarding evolving his R, yes, it's very useful. A third stealth is a third speed boost and, most importantly, a third application of Unseen Threat. People underestimate it a lot, but the fact is of his two movement abilities, it adds the most to a teamfight; his evolved leap is a gap close and an escape, but his evolved stealth adds damage reduction and more usage of his passive.

I approach his two movement abilities in the same way; if I'm already snowballing, I evolve the leap for more mobility and more versatility. If I'm having trouble in teamfights, then I evolve Void Assault for more teamfight mobility, more survivability, etc.

Whether you evolve two damage abilities or two movement abilities is up to preference, but I like to base it, again, on my current performance; am I snowballing? If so mobility helps me mete out the damage I already have. Am I having trouble? Maybe I need more damage.