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.
Take advantage of Flurry by weaving in basic attacks between spell casts - this maximizes damage output and minimizes Energy loss.
Self-casting Safeguard and using Iron Will are powerful tools for killing neutral monsters (in the jungle).
Use Sonic Wave before Dragon's Rage so you can chase the target with Resonating Strike.
The Cassiopeia Lee Sin synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Lee Sin, 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 large worsening in her KDA (ratio of kills and assists to deaths) when paired with Lee Sin. His KDA fell from NaN to NaN. This worsening shows that Lee Sin helps Cassiopeia perform not as well in competitive League of Legends rounds. Yet, the small difference shows that this performance change is not very impactful.
When Cassiopeia is an ally to Lee Sin, she sees a barely noticable drop in her full damage dealt. This change could signal that Lee Sin doesn't help protection for her to deal more damage or that his allyship also helps extend the game's duration. Similarly, when Cassiopeia is played alongside Lee Sin on the same side, he usually scores many fewer killing sprees compared to when she plays alone. This is contrasting evidence that she is worse when playing with Lee Sin.
Moreover, when Cassiopeia plays with Lee Sin on the same side, she usually receives a little less damage than when she plays alone. Taking not as much damage could mean that Lee Sin does a decent job of covering Cassiopeia during team fights.
There is no universally accepted best companion for Cassiopeia that will no matter what be her top synergy. However, Lee Sin is a very typical companion for Cassiopeia. By locking into the same team as Cassiopeia, he has no effect on their win rate by 0.0% to 50.3%. This signals that there is a weak synergy between Cassiopeia and Lee Sin that results in them performing at the same level together than without each other.
Lee Sin has a much lower diffuclty than Cassiopeia. That means Cassiopeia players don't need to be very careful when arranging Lee Sin allies to go into battle on the same side as, as they will have to have a much lower level of skill to be able to cooperate well with you.
Working together, Cassiopeia players should observe an overall large increase in your team’s capacity to deal magical damage. When paired, these champs can blast through enemies with magic damage.
Although, by grouping Cassiopeia and Lee Sin together, you will not be providing your side enough engage potential. Make sure to pick other champs on your team that neutralizes this relative gap in this pairing's potential.
Regardless of your Lee Sin ally's ability, you should focus on maximizing your income, staying alive by avoiding foolish fights, and taking down objectives. If you heed this simple advice, you will do well anyway.
To truly master Cassiopeia to work well with Lee Sin during both the laning and mid / late game phases of LoL games, you should continue reading to pick up additional lessons on this champion pairing. If you use the build and tips displayed here, you will increase your win rate by a lot.
The top items to get in your Cassiopeia and Lee Sin synergy build include Seraph's Embrace, Rylai's Crystal Scepter, and Cosmic Drive. When Cassiopeia included at least these three finished items in her build, she performed a lot better when paired up with Lee Sin than with most other common item sets. In fact, Cassiopeia had an average win rate of 50.3% when synergizing her build and playstyle to Lee Sin with this build.
To have the greatest likelihood of annihilating your oponents, you should take the Conqueror, Presence of Mind, Legend: Tenacity, Last Stand, Manaflow Band, and Transcendence runes from the Precision and Sorcery rune sets. Of all the rune builds players used for this champion pairing, this combination of runes yielded the top win rate. Notably, these runes provided a 50.3% win rate overall.
By default, tips, stats, and builds on how to team up Lee Sin with Cassiopeia are displayed for all ranked divisions. If you want to filter the statistics and builds to an individual rank, you may use the selection menu located above.