There is finally a counter to rengar.
Poppy W. Stand on your adc with it active, and slam the cat away when he tries to jump in.
Poppy W. Stand on your adc with it active, and slam the cat away when he tries to jump in.
and then u realise rengar can stay stealthed for 12seconds 
[{quoted}](name=venomous frost,realm=EUW,application-id=3ErqAdtq,discussion-id=trmx6qjl,comment-id=0000,timestamp=2015-12-13T18:03:00.416+0000)
and then u realise rengar can stay stealthed for 12seconds
You can do it on reaction though
you could also play kindred ADC and ult when he jumps in, or build Zhonias if you have any AP scalings like Ezreal or Corki
You could also buy pinks. Or oracle's. Or you could buy a GA and not be split from your team.
umm thresh counters him or any adc who has a escape