Build and Runes
Avoid dueling a Rengar when his resource bar is near full, as his skills will become empowered.
It’s generally not a good idea to fight a Rengar near brushes, as he is able to leap onto any targets inside a brush.
Using exhaust on Rengar when he comes out of his ult will reduce his damage by 50% preventing him from 1 shotting your carrys.
An Exclamation Mark will appear above your champion when Rengar is nearby with his ultimate active.