For Rengar your Jungle path is going to be quite simple first your going to go to red and have teamates leash for you. Then after you go to the wraiths above red kill that camp then make your way towards blue your smite cooldown should be finished from using it on red. Then you smite blue and then Wight and Gank top. Repeat. Gank Bot. and then if mid needs help you can gank there.

In order to have great ammount of damage with rengar is use empowered Q whenever you aren't ganking. If you are ganking and you need some time to kill the target your best empowered bet is to empowered E. Only use empowered W in teamfights when your are about to die. This is my Guide of Rengar. (This is also my First guide so please help give me tips on how to make the guide better.)