Why even play Kha'Zix?
Why play
anymore? He's been nerfed so hard and literally every time he does well he gets nerfed again.
What does he even have?
Duel Power?
Assassination ability?
Poke?
Sustain?
All in?
Ability to dive?

Let's face it.
has mediocre, highly situational damage, almost no CC (wimpy slows), little sustain for jungle, poor laning (isolation nerfs assured that) and requires at least level 11 to be able to all in and get out, while being able to do damage.

.