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.
Pay attention to Ionian Fervor stacks and try to engage Irelia when it is down.
Minion waves greatly enhance Irelia's mobility, beware fighting her inside one.
Beware of wasting your high impact spells on Defiant Dance.
The stats shown here show several valuable Cassiopeia versus Irelia counter stats that can help us figure out the distinctions between the pair. For instance, Cassiopeia’s KDA ratio ([kills + assists] / deaths) of NaN is more than Irelia’s ratio of NaN, indicating that Cassiopeia may be more central to her team's team fighting effectiveness than Irelia..
Cassiopeia typically has a similar longest killing spree as her foe does. Commonly, she receives less damage than Irelia. This typically indicates different amounts of tankyness, but it can also hint that the one champ has less agility and thus is not able to flee from further harm when engaged or poked.
Both League champions are great champions. Both have their pros and cons. In League's current meta, Cassiopeia usually fairs equally well when playing against Irelia, with a 49.9% win rate. Therefore, Cassiopeia makes an ok counter to Irelia.
While Cassiopeia does have a lower winrate compared to Irelia, when facing one another, Cassiopeia also has a much greater difficulty level that makes her a more difficult character to learn and master. You still need to be cautious when picking Cassiopeia into Ireliaas her relative depth means you may not be able to unleash her full potential without a lot of practice beforehand.
Additionally, Cassiopeia has a good amount of utility and CC, a similar amount to Irelia. This makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't a single best champion in League of Legends, in Cassiopeia vs Irelia matchups, Irelia is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Cassiopeia is a somewhat poor counter for Irelia. Make sure you focus your actions on increasing your gold and cs and destroying objectives. If you do that, you should do very well as Cassiopeia against Irelia.
If you would like to truly master Cassiopeia in order to counter Irelia during both the lane and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and tips shown here, you will grow your win rate significantly and be that much closer to League of Legends pro players.
Cassiopeia most often gets a similar amount of CS relative to Irelia. Champions who typically don't acquire much CS typically don't have to have much CS to be effective, such as supports. They are capable of scaling properly off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, typically need a lot of items to be effective. In either situation, try to surpass the numbers shown here to do well.
The most important items to use in your Cassiopeia versus Irelia build include Seraph's Embrace, Rylai's Crystal Scepter, and Cosmic Drive. When Cassiopeia included at least these three items in her build, she performed much better vs Irelia than with most other common builds. In fact, Cassiopeia had an average win rate of 49.9% when countering Irelia with this build.
To have the best chance of defeating Irelia as Cassiopeia, you 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 rune sets we have analyed for Cassiopeia vs Irelia counter picks, this order of runes resulted in the greatest win rate. In fact, these runes gave a 49.9% winrate overall.
If you would like to view Cassiopeia vs Irelia tips and builds for a a particular rank, feel free to choose one from the selection menu above. If viewing for the first time, the statistics and guides given are calculated using every game finished with both champs.