Oh, you have an unwarded bush? Free damage for Rengar. Oh, you have hard cc? I'll just qss myself and survive that. Like, wtf are you supposed to do against this cancer? You can't burst him and he has more burst than 99% of the junglers in this game. And unless you have 100% of the map warded he has free reign all game. And he doesn't even need to be in melee range to burst you anymore, thanks to the changes made to his 'q'.