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.
Killing Tentacles whenever possible will make it much easier to win a fight against Illaoi.
When your spirit gets pulled out, fight back if you can. Dealing damage to Illaoi reduces the spirit's duration.
Avoid grouping up for Leap of Faith to reduce the number of Tentacles available to Illaoi.
The stats provided here emphasize several valuable Cassiopeia against Illaoi counter stats that may help us understand the differences between these two champions. For instance, Cassiopeia’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Illaoi’s ratio of NaN, indicating that Cassiopeia may be more central to her team's team fighting capacity than Illaoi..
Cassiopeia often has a slightly larger longest kill spree than her matchup does. Commonly, she takes less damage than Illaoi. This often reflects different amounts of tankyness, yet it can also illustrate that the one champ has less mobility and thus is unable to escape further damage when poked or engaged.
Both League of Legends champions are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Cassiopeia usually fairs equally well when facing off against Illaoi, with a 50.8% win rate. As a result, Cassiopeia makes an ok counter for Illaoi.
While Cassiopeia does have a higher win rate compared to Illaoi, when on opposite teams, Cassiopeia also has a much greater difficulty level that makes her a more time consuming champ to pick up and master. You still need to be cautious when picking Cassiopeia into Illaoias her relative depth means you may not be able to unleash her full potential without a significant amount of practice beforehand.
Additionally, Cassiopeia has a good amount of utility and CC, a similar amount to Illaoi. This often makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Cassiopeia vs Illaoi matchups, Cassiopeia is the better champ with a similar win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Cassiopeia is a decent counter to Illaoi. You will do well by focussing your gameplay on keeping up your gold and cs and clearing objectives. If you do that, you should do very well as Cassiopeia against Illaoi.
To truly master Cassiopeia in order to counter Illaoi during both the early game and mid / late game phases of League of Legends, you should keep reading to learn a few extra lessons on this matchup. If you pay attention to the build and tips displayed here, you will grow your win rate significantly and be closer to League of Legends pro players.
Cassiopeia typically accumulates a similar amount of CS as Illaoi. Champions who typically don't take much CS usualy don't have to have much CS to be effective, such as supports. These kinds of champions are capable of scaling well 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 displayed on this page to do well.
The most important items to use in your Cassiopeia versus Illaoi build include Seraph's Embrace, Rylai's Crystal Scepter, and Liandry's Torment. When Cassiopeia combined at least these three pieces in her build, she performed much better when facing Illaoi than with many other common counter builds. In fact, Cassiopeia had an average winrate of 50.8% when playing against Illaoi with this counter build.
To have the highest likelihood of crushing Illaoi as Cassiopeia, Cassiopeia players should use 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 sets players used for Cassiopeia vs Illaoi matchups, this combo of runes resulted in the greatest win rate. In fact, these runes gave a 50.8% winrate overall.
If you need to get Cassiopeia versus Illaoi tips and counter builds for a a specific rank, feel free to select one from the selection menu displayed above. At first, the statistics and guides given are computed using all matches finished with these champions.