Welcome to my Rengar guide!! This guide will help you (at least i hope so) to become a better Rengar player. Rengar is an very good solotop and/or jungler. He uses unique resource called Ferocity wich after 5 abilities grants him an extra effect on one of his abilities. He hunt's and collect's Champions heads wich count as trophies on his unique item called Bonetooth Necklace wich grant's him diffrent powers.

This is my first guide on any champion so i will try to update and upgrade my guide. Plz let me know what you liked about it and what not. And keep in mind this is only my opinion not the best guide that is out there. I did this guide myself so sorry for any mistakes. Plz like my guide if you liked it and plz let me know why you disliked my guide so i can improve.
ENYOJ!

is Rengar's passive. While in brush or stealth Rengar will leap at the target when using his basic attack.

is Rengar's Q skill. Rengar's next basic attack deals bonus damage and grants him increased Attack Speed.
Ferocity Bonus: Rengar deals enhanced damage and doubles his Attack Speed bonus.
The next basic attack within 6 seconds deals 30/55/80/105/130 (+1) physical damage. Grants % Attack Speed for 3 seconds.

Ferocity bonus: Additionally deals 150% of Rengar's Attack Damage (+0.0) in bonus damage, and the Attack Speed bonus is doubled.
Cost
Builds 1 Ferocity
Range
0

is Rengar's W skill. Rengar lets out a battle roar, damaging enemies and gaining bonus Armor and Magic Resist for a short duration.
Ferocity Bonus: Rengar heals for a large amount.
Deals 75/120/165/210/255(+1) magic damage to enemies in the area. Grants 20/30/40/50/60 Armor and Magic resist for 3 seconds if an enemy is hit.

Ferocity bonus: Heals Rengar for 15% of his max health.
Cost
Builds 1 Ferocity
Range
500

is Rengar's E spell. Rengar throws a bola at his target, slowing them for a short duration.
Ferocity Bonus: Roots the target for 1 second.
Throws a bola dealing 60/105/150/195/240 (+0.7) physical damage and slowing an enemy by 50/55/60/65/70%, Enemy Movement Speed recovers over 2.5 seconds.

Ferocity bonus: Roots the target for 1 second.
Cost
Builds 1 Ferocity
Range
575

is Rengar's R spell.Rengar activates his predatory instincts, stealthing and revealing all enemy Champions in a large radius around him. He gains Movement Speed and rapidly generates Ferocity while stealthed.
Activates predatory instincts stealthing Rengar, and revealing enemy Champions within 2000/3000/4000 range.

Rengar gains 10/15/20% Movement Speed and 5 Ferocity over 3.75 seconds. Lasts 0.0 seconds or until Rengar uses an ability that removes his stealth.
Cost
No Cost
Range
2000/3000/4000

Pros:
-No mana ( Ferocity)
-Great burst DMG
-Can surprise enemy with his Unseen Predator and Thrill of the Hunt
-Awsome Ulty grants him vision and stealth to surprise and/or catch enemy player's.
- Bola Strike is good CC

Cons:
-Can be easy to harass early game when he doesn't have all abilities.
-Ulty can be countered by oracles.

So this is an very interesting part of my build, because most of you will max Savagery first and then Bola Strike and Battle Roar. But i find it most effective to max out Battle Roar first for nice mix of DMG and sustain. Then i max out Savagery or Bola Strike it's just down to you. Realy try this out and you will see that it will help you get more kills and less death's. I went like 4/6/13 when i maxed out Savagery first and now i always get around 14/3/16

Skill sequence:

For runes i take Greater Mark of Attack Damage because i find it the best for Rengar. Because he need's DMG as assassin and fighter. Seal of Armor will help you as it gives you little bit of armor that you need against AD carry's. The same goes for Glyph of Magic Resist for AP carry's. Quintessence of Attack Damage will do the same job as the Mark.

I have 21/9/0 masteries focusing on DMG in offence and armor and health in defance.
Because he is an assassin and fighter who's job is to get the squishy targets first and he needs DMG for it and armor to get out alive.

Offence:
Summoner's Wrath will boost your Ignite, Exhaust and Ghost

Brute Force will give you some DMG.

Alacrity will give you some attack speed.

Weapon Expertise will give you armor penetration.

Deadliness will give you Att. speed per Lvl.

Vampirism will give you 1% life steal.

Sunder gives you some more armor penetration.

Executioner will give you some bonus to low HP targets.

Defence:
Two points in Resistance will give you some Magic resist.

Two points in Hardiness will give you some extra armor.

Durability will give you health per lvl.

Veteran's Scars will give you bonus 30 health.

So your core Build should be:
Bonetooth Necklace

Against Heavy AP team you can buy Maw of Malmortius instead of Bloodthirster and Wit's End instead of Black Cleaver.

Against Heavy AD team buy Sunfire Aegis instead of Black Cleaver. Other things should stay the same.

Against Tanky Team buy Last Whisper instead of Black Cleaver.

NOTE: if you have truble geting kills and assists think about selling Bonetooth Necklace and buying one of the item's below!!

OTHER ITEMS:

is a good all around item but i don't find it VERY usefull. You can allways use it it will do more good than bad.

is a good item on Rengar because it giver you CDR, Armor penetration and attack speed. Buy it if you need CDR.

Zeke's Herald buy only if no one on your team has it. It gives you health and cooldown reduction and it gives your team attack speed.

you can buy it if you REALLY need health. Otherwise i don't find it that useful.

is also an good item for AP team, it gives you CDR and increases health regeneration.

is item you can buy against tanky team because it gives you Armor penetration and attack speed.

is item you should buy against heavy AD team for armor and the little DMG is returned to the target.

is great item for Rengar you can put it in your build instead of [Randuin's Omen]. Its good because it gives you armor and 750 health when you die.

You should also consider buying for AD team

For Summoner Spells i choose ] and . I found them the best on most of the champions and Rengar is not an exception. Ignite will give you a little bit of magic DMG for that first blood or it will just help you do some extra bit of DMG. Flash is realy self explanatory. Use it to flash in or out of combat.

Other options are:
it gives you speed to get away or to chase an enemy through the jungle. I find it best when jungeling.

slows enemy's attack speed and movement speed. It's great spell for 1v1 combat.

this spell will give you instant health for more sustain and to surprise your enemy's when they think they had killed you.

use it for jungling. It's speeds up your jungling ALOT.

You can use but its not as good:

use it to get to other lanes quickly and help out.

this spell will boost your attack speed but you have ingame shop for that.

And plz for the love of god don't bother with other spells!

So this was my guide - short but i hope you got the clue on how to play Rengar the Pridestalker. I would like to hear you feedback on how to improve and why you disliked my guide

To jhoijhoi for his Guide on how to make a guide. he helped me out with coding ALOT. So many thanks.
To Riot site http://eune.leagueoflegends.com/champions/107/rengar_the_pridestalker for skills explanation.
And to all of you who will like the guide and comment.