Kha'Zix is one of my favourite champions. He is assassin (my favourite role), but he is doing well in teamfights. He has very good ganks (almost every gank, kill is secured), and you can easily take kills with your Q (taste their fear). Use your evolved E to jump in, kill and jump out.

On lvl 1 and 2 it's important that you kite well, because you can easily die on blue buff (or gromp). Use your Q first, than stand near and do your W, so you can heal yourself. With Trailblazer you will farm in jungle easily, and come to gank with almoast full - HP.

For Kha'Zix you don't need so much skill to be good, but if you learn some, you will be a monster in the jungle (which you already are :) ). The hardest combo with Kha'Zix is: While you are flying (with your evolved E), do your Q and W and kill enemy team champion, and instantly after, jump again out of enemy team.

Pros: can carry games

assassin, but good in team fights

Easy and fast jungle clear

assassin, but enough tanky

op ganks

Cons: squishy

need to kite well on early levels

not so much cc

Good luck! I hope you will like my guide, and also that it wil help you to become better Kha'Zix player. Bye