Lead your enemy when targeting with Noxious Blast to ensure the hit.
Use Twin Fang on poisoned stationary targets like monsters and units stunned by her Petrifying Gaze for maximum damage.
Make sure to take paths through brush when chasing opponents to take advantage of Rengar's passive.
Use Rengar's ultimate to find and assassinate high priority targets in team fights and skirmishes.
A lot of Rengar's power comes from empowered abilities he uses at the right moment - choose wisely!
The Cassiopeia Rengar synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Rengar, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Cassiopeia sees a very large drop in her KDA (ratio of kills and assists to deaths) when paired with Rengar. His KDA went down from NaN to NaN. This fall shows that Rengar helps Cassiopeia perform poorer in ranked League matches. Yet, the small difference proves that this performance change is not very impactful.
When Cassiopeia is an ally to Rengar, she observes a marginal improvement in her complete damage dealt. This could indicate that Rengar helps provide cover for her to dish out more damage or that his allyship also helps increase the match's duration. Similarly, when Cassiopeia is played with Rengar on the same side, he usually scores many fewer killing sprees compared to when she plays without Rengar. This is contrasting evidence that she is worse when playing with Rengar.
Additionally, when Cassiopeia plays with Rengar on the same side, she often takes a little less damage than when she plays alone. Receiving not as much damage may indicate that Rengar does a decent job of protecting Cassiopeia in teamfights.
There is no one best synergy for Cassiopeia that will 100% of the time be her #1 teammate. Yet, overall, Rengar is a relatively poor teammate for Cassiopeia. By playing on the same team as Cassiopeia, he drops their win rate by -2.0% to 48.3%. This signals that there is a bad bond between Cassiopeia and Rengar that allows them to perform not as well together than alone.
Rengar has a lower difficulty than Cassiopeia. That means Cassiopeia players don't need to be cautious when arranging Rengar allies to play with, as they will need a lower level of skill to play well with you.
When playing alongside, Cassiopeia players should expect to witness an overall large increase in your team’s capability to deal magic damage. When paired, these champions can blast through enemies with magic damage.
Conversely, by grouping Cassiopeia and Rengar together, you probably will not be giving your team very much tankyness. We recommend you pick other champs on your team that nullifies this relative disparity in their kit.
Regardless of your Rengar ally's skill level, you need to focus on increasing your gold income, staying alive by avoiding foolish fights, and taking down objectives. If you do this, you will do well anyway.
If you would like to truly master Cassiopeia in order to work well with Rengar during both the lane and mid / late game phases of LoL rounds, you should continue reading to learn additional tips and tricks for this champion pairing. If you mind the build and tips shown here, you will grow your win rate significantly.
The most important finished items to focus on in your Cassiopeia and Rengar synergy build include Seraph's Embrace, Rabadon's Deathcap, and Rod of Ages. When Cassiopeia used at least these three pieces in her build, she performed significantly better when fighting alongside Rengar than with many other typical builds. In fact, Cassiopeia had an average winrate of 48.3% helping carry Rengar with these items in her kit.
To have the best probability of crushing your oponents, Cassiopeia players should equip the Conqueror, Presence of Mind, Legend: Tenacity, Last Stand, Manaflow Band, and Transcendence runes from the Precision and Sorcery rune sets. Out of all the runes players picked for this team composition, this order of runes resulted in the best win rate. In fact, these runes provided a 48.3% winrate overall.
By default, tips, statistics, and builds on how to pair Rengar with Cassiopeia are shown for all ranked divisions combined. If you would like to scope the statistics and builds to a specific player tier, you should use the selection menu located above.