What the Rift Lab holds on this champion: the kit as Riot publishes it, the build the lab reviewed, and the matchups it has documented. Anything the dataset does not record is left out rather than filled in.
Riot's own text for each slot, in the order the champion learns them.
Rengar leaps to his target when attacking if he is in the brush. Unique enemy champion takedowns grant him bonus Attack Damage. Casting basic abilities grants Rengar Ferocity which empowers his basic abilities. Casting empowered abilities briefly grants him bonus Movement Speed.
Rengar's next couple of attacks gain Attack Speed. The first attack deals additional physical damage and Critically Strikes, with Critical Strike Chance further increasing the damage. Ferocity: Rengar gains even more Attack Speed and the first attack deals even more physical damage.
Rengar damages nearby enemies and heals himself for some of the recent damage he has taken. Ferocity: Rengar deals more damage and removes all crowd control effects from himself.
Rengar throws a bola, dealing physical damage and slowing the target struck. The bola also reveals the target and grants vision of the surrounding area. Ferocity: Rengar deals more damage and roots the target.
Rengar gains movement speed and reveals the nearest enemy champion for a period of time. Shortly after casting Rengar becomes camoflauged with his next attack shredding the target's armor for a period of time.
The reviewed purchase order and rune page for this champion. Every entry that has a page of its own is linked to it; an item the catalogue holds no page for is printed as a name rather than pointed at a page that does not exist.
One slot, changed when the enemy team changes the problem. These are answers, not automatic purchases.
Ability text and the in-game title follow Riot's official Wild Rift champion pages. The tier letter is the external snapshot shown on the tier list, and the build is the Nexus reviewed snapshot — neither is a win rate.