Rengar's abilities have no cost related to them and their use is only limited by cooldowns. Instead he uses Ferocity as his secondary resource.
Rengar gains 1 point of Ferocity with each ability he uses on enemies (including structures and neutral monsters). Upon reaching 5 Ferocity Rengar gains the ability to cast an alternate set of abilities, which are empowered versions of his basic abilities. Using an empowered ability consumes all 5 Ferocity. The two ability-sets do not share cooldowns, and his basic abilities will continue to count down while his empowered abilities are available. His empowered abilities have no cooldown and can be used any time 5 Ferocity is available.
| Unseen Predator|
|(Innate): While in brush or stealthed, Rengar gains bonus attack range and his attacks cause him to leap at his target. This bonus lasts for ~0.5 second upon exiting brush or stealth. This will happen regardless of whether or not his target has sight of him, and has no internal cooldown.
Range: 600, 750 with 9 trophies on
| Unseen Predator is a passive ability that activates whenever Rengar is stealthed or in brush, allowing him to leap onto the target of his next autoattack. If Rengar possesses a with 9 or more stacks, Unseen Predator's maximum range is increased.
|(Active): Rengar's next basic attack deals bonus damage and grants him increased attack speed for 3 seconds.
Physical Damage: 30 / 60 / 90 / 120 / 150 (+1.0 per attack damage)
Cooldown: 8 / 7.5 / 7 / 7.5 / 6 seconds
Attack Speed: 30 / 35 / 40 / 45 / 50 %
| Empowered Savagery|
|(Active) - Ferocity Bonus: Savagery deals bonus damage equal to 100% of Rengar's attack damage, and the Attack Speed bonus is doubled.
Empowered Physical Damage: 30 / 60 / 90 / 120 / 150 (+2.0 per attack damage)
Empowered Attack Speed Bonus: 60 / 70 / 80 / 90 / 100 %
| Savagery is an autoattack modifier that causes Rengar's next basic attack within a short duration to deal bonus physical damage and increase his attack speed for 3 seconds afterwards. When Savagery is enhanced by Ferocity, the damage is boosted and the attack speed bonus is doubled.
| Battle Roar|
|(Active): Rengar lets out a battle roar, damaging enemies and gaining bonus armor and magic resist for a short duration.
Cooldown: 15 / 14 / 13 / 12 / 11 seconds
Magic Damage: 60 / 100 / 140 / 180 / 220 (+0.8 per ability power)
Bonus Armor & Magic Resistance: 15 / 22 / 29 / 36 / 43
| Empowered Battle Roar|
Empowered Battle Roar
|(Active) - Ferocity Bonus: Battle Roar also heals Rengar for 15% of his maximum health.
| Battle Roar is a point blank area of effect ability that deals magic damage to all enemy units in an area around Rengar, also increasing his armor and magic resistance for 3 seconds if an enemy was hit. When Battle Roar is enhanced by Ferocity, Rengar is also healed based on a percentage of his maximum health.
| Bola Strike|
|(Active): Rengar throws a bola at his target, slowing them for 2.5 seconds. The slow decays over the duration.
Cooldown: 12 / 11 / 10 / 9 / 8 seconds
Physical Damage: 60 / 105 / 150 / 195 / 240 (+0.7 per bonus attack damage)
Slow: 50 / 55 / 60 / 65 / 70 %
| Empowered Bola Strike|
Empowered Bola Strike
|(Active) - Ferocity Bonus: Bola Strike initially roots his target for 1 second. The slow is applied in full after the 1 second, and decays over the remaining 1.5 seconds. Crowd control reduction will reduce each duration separately.
| Bola Strike is a targeted ability that hurls a bola net at a single enemy unit, dealing physical damage and slowing them on impact. When Bola Strike is enhanced by Ferocity, it will also immobilize the target for 1 second.
| Thrill of the Hunt|
Thrill of the Hunt
|(Active): Rengar activates his predatory instincts, stealthing and revealing all enemy Champions in a large radius around him. He gains movement speed and generates 1 Ferocity per 0.75s while stealthed. Lasts 5 seconds or until he uses an ability.|
Cooldown: 140 / 105 / 70 seconds
Vision Radius: 2000 / 3000 / 4000
Movement Speed Bonus: 20 / 25 / 30 %
| Thrill of the Hunt is a self-targeted ability that causes Rengar to become stealthed for a short duration. The effect can be ended prematurely by attacking or using abilities. While stealthed, Rengar gains bonus movement speed, generates Ferocity, and will be capable of leaping onto a target of his next basic attack with Unseen Predator Unseen Predator. Additionally, all enemy units in a radius around Rengar are revealed while he is stealthed. If Rengar possesses a with 14 stacks, Thrill of the Hunt's stealth duration is increased and Rengar gains 2 Ferocity (instead of 1) from his next ability cast when it expires.
As part of the event, The Hunt Is On!, Rengar and Kha'Zix are assigned to defeat one another in battle. The first to score a kill on the other claims victory (assists count). The event begins randomly after Kha'Zix has used all 3 evolution points, and Rengar is in possession of the .
- If Kha'Zix is victorious, he gains a fourth evolution point.
- If Rengar is victorious, his is replaced with the , which grants him the bonuses of a fully stacked .
This event can only occur once per game, even if both teams possess both champions. A video describing the event can be found here.