This is my second guide, I try to keep this guide updated so please rate and give me a feedback ! ;)

Start with .
Then get Bonetooth necklace OR
When you got both these items, get

Now build a defensive items, like

Now build armor penetration. Armor pen is good agaisnt armored ennemies. Even if the ennemy isnt eavy on armor stacks, you can stil buy armor pen due to ennemies runes/masteries and their few armor items. So, you can build a

Dont forget to buy sight ward and for baron/buffs/drag and easier ganks .

Rengar's jungle route is simple :

Here is the order:
1: RED BUFF , with a leash, ask for a smiteless .
2: Wraiths
3: Wolves
4: BLUE BUFF

Then you should be lvl 3, ready to gank a lane. Use health pot when required during the jungling part. I strongly suggest waiting to have 3/4/5 Ferocity bar ( the passive ) before ganking a lane. Otherwise you wont enjoy the powerfull bonus from it, and your gank might sucks.

Skills:

Passive : When using an ability power, rengar gain a ferocity bar, after 5 ferocity bars, rengar gain a bonus from his next ability. This passive will also allow rengar to jump on ennemy when you are in a bush. Your target has to be in the circle around rengar to allow you to jump on them, this passive doesnt give you any bonus damage, but help alot when chasing somebody down or ganking somebody.

is a very strong ability, it deals alot of damage based on all of your ad "points". This ability also give some attack speed.
Ferocity bonus : Deals ALOT more damage and gives some more attack speed.

is not the best, but still a good defensive skill . When activated, battle roar deals some damage based on your ability power, it also gives you some armor and magic resist for 3 second.
Ferocity bonus: When using your passive on battle roar, this spell will do the same effect and additionally heal you 15% of your maximum health. This can be really good in the jungle , to escape somebody with low health, or even to survive an ingite.


: The bola strike is used to slow people and dealing some damages. This is a really good spell to chase or escape somebody as well.
Ferocity bonus: When using bola strike + rengar's passive, the bola will not only slow your target, but it will be snared there for 1 second + the target is slowed for the 1.5 next seconds. This can be really usefull when you are ganked somebody.

When using rengar, you always need to have 3 or more ferocity bar (passive) , as I said in the first chapter.

So i suggest using your first, then going with the rest of your skills, because the target will be slowed and this will give the opportunity to your team mates to come help you faster.You can also gank with 4 stacks , initiating with the , then use TWICE, this way, you will deal some EPIC damage to your target.

If you are ganking somebody with high mobility (like , , ...), i strongly suggest you having your stacks full already. Initiate with your to root him in place, then use your and

All i have to say, is keep trainning with this champ because he is really strong in good hands.