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.
Dodging Arctic Assault and Glacial Prison can give you a huge advantage.
Focus on avoiding the second swing of Winter's Wrath which carries the brunt of the damage.
Melee enemies can also stack Frost for Sejuani, be very careful around them.
The stats shown here show some valuable Irelia vs. Sejuani matchup stats that may help us appreciate the distinctions between the pair. As an example, Irelia’s KDA ratio ([kills + assists] / deaths) of NaN is more than Sejuani’s ratio of NaN, indicating that Irelia may be more central to her team's team fighting potential than Sejuani. This observation is in large part fueled by the difference in kills.
Irelia often has a slightly larger longest killing spree than her enemy does. Typically, she takes a similar amount of damage to Sejuani. This often reflects different amounts of tankyness, yet it can also indicate that the champ with increased health has less mobility and thus is not able to escape further harm when poked or engaged.
Both League champions are great. Both have their pros and cons. In League's current meta, Irelia usually wins when facing off against Sejuani, with a 52.6% win rate. Thus, Irelia makes a good counter to Sejuani.
While Irelia does have a higher winrate compared to Sejuani, when on opposite teams, Irelia also has a greater difficulty level that makes her a more challenging champ to learn and master. You should be be fine when picking Irelia into Sejuani.
Additionally, Irelia has some amount of CC and other utility, a similar amount to Sejuani. This often makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there is not a single best champion in League of Legends, in Irelia vs Sejuani matchups, Irelia is the better champ with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your teammates during team fights.
Irelia is a good counter for Sejuani. You will do well by focussing your strategy on keeping up your CS and taking out objectives. If you are able to do that, you should be able to stand on your own as Irelia against Sejuani.
To truly master Irelia to counter Sejuani during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tips and tricks for this matchup. If you pay attention to the build and suggestions displayed above, you will increase your win rate by a lot and be that much closer to League of Legends pro players.
Irelia usually accumulates much more CS relative to Sejuani. Champs who typically don't earn many minion kills typically don't have to have much CS to be effective, such as support champions. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, usually have to have a lot of items to be effective. In either case, try to surpass the values displayed on this page to do well.
The most crucial items to prioritize in your Irelia versus Sejuani build include Wit's End, Blade of The Ruined King, and Sundered Sky. When Irelia used at least these three pieces in her build, she performed significantly better against Sejuani than with most other common item sets. In fact, Irelia boasted an average winrate of 52.6% when countering Sejuani with this build.
To have the highest probability of vanquishing Sejuani as Irelia, Irelia players should equip the Conqueror, Triumph, Legend: Alacrity, Last Stand, Biscuit Delivery, and Cosmic Insight runes from the Precision and Inspiration rune sets. Out of all the rune combinations players picked for Irelia vs Sejuani fights, this combo of runes resulted in the best win rate. Moreover, these runes provided a 52.6% winrate overall.
By default, tips, statistics, and builds on how to beat Sejuani as Irelia are presented for all ranked divisions combined. If you would like to filter the stats and builds to a particular skill level, you can use the selection menu located earlier in the counter matchup guide.