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.
Defiant Dance is not interrupted by crowd control, try timing it for incoming disables.
Flawless Duet does not have a maximum travel distance, try using it in creative ways.
Use Bladesurge to cover great distances by targeting low life minions on your way to champion targets.
The Cassiopeia Irelia synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Irelia, 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 Irelia. His KDA decreased from NaN to NaN. This drop shows that Irelia helps Cassiopeia perform worse in competitive League of Legends rounds. Yet, the small difference proves that this performance change is only marginal.
When Cassiopeia is an ally to Irelia, she observes a little increase in her total damage dealt. This could indicate that Irelia provides protection for her to deal more damage or that her presence on the team also helps increase the round's duration. Similarly, when Cassiopeia is played with Irelia on the same side, he usually scores many fewer killing sprees than when she plays without Irelia. This is contrasting evidence that she is worse when playing synergisticly with Irelia.
Moreover, when Cassiopeia plays with Irelia on the same side, she on average takes a little less damage than when she fights alone. Getting dealt not as much damage may mean that Irelia does a decent job of protecting Cassiopeia in team fights.
There is no universally accepted best ally for Cassiopeia that will 100% of the time be her best synergy. Yet, Irelia is a terrible ally for Cassiopeia. By locking into the same side as Cassiopeia, she lowers their win rate by -4.0% to 46.3%. This signals that there is a terrible bond between Cassiopeia and Irelia that allows them to perform worse together than alone.
Irelia has a much lower diffuclty than Cassiopeia. That means Cassiopeia players don't need to be very careful when lining up Irelia comrades to play with, as they will require a much lower level of skill to be able to work well with you.
When playing together, Cassiopeia players will likely see an overall large increase in your team’s capacity to deal magical damage. When paired, these champions can blast through enemies with magic damage.
Although, by bringing Cassiopeia and Irelia together, you probably will not be providing your other allies enough engage potential. Plan to include other champs on your team that neutralizes this disparity in their abilities.
Regardless of the ability of your Irelia ally, you need to focus on maximizing your income, outlasting your enemies, and clearing objectives. If you do this, you should do well anyway.
If you would like to truly master Cassiopeia in order to synergize with Irelia during both the laning and mid / late game phases of League rounds, you should continue reading to gather additional tips and tricks for this champion pairing. If you pay attention to the build and tips shown above, you should grow your win rate by a lot.
The best items to include in your Cassiopeia and Irelia synergy build include Seraph's Embrace, Rylai's Crystal Scepter, and Liandry's Torment. When Cassiopeia included at least these three items in her build, she performed significantly better when paired up with Irelia than with many other common builds. In fact, Cassiopeia had an average winrate of 46.3% when synergizing her build and playstyle to Irelia with this build.
To have the best likelihood of crushing your oponents, you should use 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 used for this champion pairing, this mix of runes yielded the top win rate. In fact, these runes provided a 46.3% winrate overall.
By default, tips, stats, and builds on how to pair Irelia with Cassiopeia are shown for all skill levels, merged. To filter the statistics and builds to an individual skill level, you can use the selection menu at the top of this page.