LoL Rengar players will likely find him to be a difficult champion to build out properly. You'll see that his build changes when he is fighting either diversified or homogenous team compositions, indicating you should not take the same Rengar build every single round of League of Legends
The best items to incorporate into your champion's build include: Dämmerungsklinge von Draktharr, Gefräßige Hydra, and Axiombogen. Players who included these pieces in their builds had a significantly better win rate than those who utilized other item builds for Rengar. Moreover, if you are fighting a mixed enemy team comp, you should strongly consider getting yourself the Präzision, and Inspiration runes. In recent matches, he won the greatest number of his matches when equipped with these runes.
We came up with our Rengar build recommendations by examining 51.687 recently ranked LoL games with him in them. We only propose the best winrate Rengar builds that were built by ranked players enough times for us to propose them. With so many rounds in our data, we are confident in our recommended builds.