On Kha Zix W changes.

So, I find that very often I level and evolve W last. I took a note from the korean players. The W is obviously the weakest ability here as it only provides sustain and in an assasin this isn't really what you are looking for. So, here is how I have learned to play him effectively.

Evolve** E **at level 6, Q at level 11 and W at 16. Here is why I do it this way. You're an assassin you need your escape. You are going to jump in burst someone down and when you receive your kill or assist you need to bail. This helps you Dive, take on multiple enemies and the bonus range on the jump is good for catching people out of place and saving your hide.

Obviously your Q is your biggest damage source so we evolve this next and your W last because truthfully you don't even need it to jungle sustain after you finish spirit of the elder lizard. Late game your** W** serves as wave clear and helps you seige/poke for taking turrets and harass before team fights.

You max your abilities in this order. R Q W E. Q still does most damage, W still gives you sustain and a slow, and your R is obviously only because of your evolutions and your** E** does decent damage but you don't really want to give up the utility of your W.

There was no reason to change Kha'zix because he already does exactly what you want him to. High Priority assassin, does a ton of damage, and is amazing at 1v1ing everyone except early game lee sin/gangplank.