Hey its EQA NeuroToxin with another installment of my adaptable jungle build guides.

Rengar is relatively easy to play and scales very well with items. Hes a good jungler right now and is being played in korea and Eu.

Don't upgrade to lantern until your at 29 stacks
Go Madreds- kindlegem - Lucidity Boots - Brutalizer - Cutlass
Then upgrade kindle gem into Locket- brut into yommus - cutlass into botrk(madreds whenever you hit 29 stacks)
DONT FORGET TO USE LOCKET ACTIVE/BOTRK ACTIVE/YOMMUS ACTIVE
They're all very important plz use them.

With 5 stacks, ult, jump on target, use empowered E, then use q, then w, and if they're not dead by the time ur stacks fill up again, use e again and repeat
PLZ HIT E ITS THE MOST IMPORTANT SPELL.

Farm till lvl 6 because Rengars pre 6 ganks sucks.( only gank if the gank is obv pre 6 and if you have 5 stacks)
When you want to gank, have 4 or 5 ferocity stacks before u go bc u want empowered e bc its ur only hard cc. the ult dosent immediately give you full stacks anymore so u need to ult with full stacks. remember to use ur e over walls to get ferocity stacks. when you gank and you have 5 stacks, jump on them with ur ult and instantly use e. if you have 4 stacks when you gank, use w after u jump on them (ONCE) then use empowered e.

PROS
1. Good scaling
2. Does lots of dmg while still being tanky
3. Decent mobility
4. good passive for jungle fights
5. Good ult for ganking / running
6. great gap closer
7. Hard cc

CONS
1. Gets outdueled by every early game jungler unless you outplay super hard
2. passive is situational
3. very low gank potential pre 6
4. ult cd got nerfed
5. you need to manage ur stacks to gank effectively
6. will get outsmited by elise/lee sin