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Rengar

Rengar's abilities

• Passive: Unseen predator

  
  Rengar's Passive has three main aspects to it, Leaping while in a brush, Bonetooth Necklace and ferocity stack.
  
  

  Brush passive:

  When Rengar enters a brush he gains the ability to leap to any autoattack-able unit within 725 range. Leaping to an enemy or a jungle camp grants you 1 pink ferocity stack, leaping will only give you 1 ferocity and no more until the end of combat.
  
  

  Ferocity:

  Ferocity goes hand in hand with Rengar's brush passive, since it is the key to dealing the most amout of damage possible in many ways. Upon casting an empowered ability, Rengar gains (30-50%) movement speed for 1.5 seconds.
  After being out of combat for 10 seconds Rengar's ferocity resets to zero.
  
  Each one of Rengar's abilitys grants him 1 ferocity stack when used, Meaning: for example if you use his Q it wont give you a ferocity stack until you attack with it. When Rengar reaches 4 ferocity stacks his abilitys become empowered.
  [you can read more about his empowered abilities under their corresponding abilities]
  
  

  Bonetooth Necklace:

  Bonetooth Necklace is pretty simple really, but it's incredebly important to play around his Bonetooth Necklace passive. If an enemy dies within 3 seconds of Rengar dealing damage to them, Rengar gains a stack on them. Bonetooth Necklace stacks are only obtainable once per enemy champion.
  
  If you know that one stack will be hard to obtain, try to get it asap. Like for example tanks.

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• Q: Savagery CD: 6-4 Sec

  
  Rengar's Q is his best ability. It is his main damage dealing ability.
  Upon activating: Rengar's next two auto attacks gain 40% Attack Speed. The first auto always crits and deals additional physical damage (30-150 +(100%-120% Attack Damage)).
  
  Max Ferocity: Rengar's next auto attack crits, deals (30-235 +(140% Attack Damage)) physical damage and gains (50-101%) attack speed for 5 seconds after the first auto attack.

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• W: Battle Roar CD: 16-10 Sec

  
  Upon activating: Rengar lets out a roar dealing (50-170 +(80% Ability Power)) magical damage in a small area around him and restores 50% of the damage taken in the last 1.5 seconds.
  
  Max Ferocity: Rengar lets out a roar dealing (50-220 +(80% Ability Power)) magical damage in a small area around him and restores 50% of damage taken in the last 1.5 seconds (restores 100% of damage taken from jungle monsters). Rengar additionally cleanses all crowd control.
  
  Knowing when to use this ability is a huge part of mastering Rengar.

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• E: Bola Strike CD: 10 Sec

  
  Upon activating: Rengar throws a bola towards the cursor. If the bola hits a target it reveals them for 2 seconds and deals (50-235 +(80% Attack Damage)) physical damage and slows the target (30-90%) for 1.75 seconds.
  
  Max ferocity: Rengar throws a bola towards the cursor. If the bola hits a target it reveals them for 2 seconds and deals (50-305 +(80% Attack Damage)) physical damage and Roots the target for 1.75 seconds.

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• R: Thrill of the Hunt CD: 110-90 Sec

  
  

  Passive:

  Rengar can now leap while Camouflaged.
  
  Upon activating: after 2 seconds Rengar becomes Camouflaged for a few seconds (12-20 Seconds).
  While active: Rengar gains (40-60% Movement speed) bonus movement speed and True Sight of his nearest target within (2500-3500 units) range for the remainder of the duration. If Rengar gets a new target he won't lose True Sight of his old target, this lets you get True Sight of their intire team. If Rengar gets within 1600 range of his target, that target gets eyes above their head. Enemies within 1200 range of Rengar's target will also see the eyes above the target's head.
  
  Leaping to an enemy cancels the ability and deals (50% Attack Damage) additional physical damage and gain (12-24) lethality (flat armor pen) on that target for 4 seconds.

Rengar's best runes and builds

Fleet