Why is Kha'Zix played in LCS?
I've seen a few games (mostly NA i think) where Kha'Zix was picked for LCS matches, and I can't for the life of me understand why.
Kha'Zix is an assassin that thrives off of people being isolated and him not being seen, he has a nice amount of mobility once he gets upgraded E and he can manage to get kills and/or assists.
But thats the point, he thrives off of isolation, while I imagine that most LCS teams are coordinated enough to counter his isolation damage.
Let's say he goes in for a gank in mid lane. Kha'Zix gets the kill, and he gets stronger, OR he gives the kill and loses out on the snowballing potential, either of these scenarios, the team looses out. If he gets the kill, he gets more powerful but how most LCS games goes there tends to be one or multiple final fights where the result of the game is determined. Even if he is fed and snowballed (which would in turn mean that his teammates would NOT get this gold) he is still, in most scenarios, not reaching his full potential (because of the coordination required to play at this level), and if he gives away a lot of the kills, he is an assassin that is not fed, nor reaching his full potential.
I just don't understand why this champion is played as it almost requires the enemy team to make mistakes in positioning to get the full potential out of him. Why is he played in LCS? 

and still 1 shot people.