Melee allies can stack Frost for your Permafrost, keep an eye on who they are attacking.
Save Glacial Prison for encounters where you have teammates present to take advantage of it.
Use Arctic Assault to escape bad situations, interupt channeled spells or chase runners.
When Kayn is in terrain near you, you will get a visual warning on the edge of the terrain he's in.
Umbral Trespass requires Kayn to damage a target first. Try to dodge Blade's Reach to deny him a long range cast of Umbral Trespass.
Damage Kayn while he's in Shadow Step to shorten its duration, or apply hard crowd control (stun, charm, knockup, etc) to end Shadow Step immediately.
The stat comparisons provided here underscore several influential Sejuani versus Kayn counter statistics that can help you interpret the distinctions between the pair. Sejuani’s KDA ratio ([kills + assists] / deaths) of NaN is more than Kayn’s ratio of NaN, showing that Sejuani may be more central to her team's team fighting effectiveness than Kayn..
Sejuani normally has a slightly smaller longest killing spree than her matchup does. Commonly, she takes less damage than Kayn. This typically indicates differing health capacities, yet it can also indicate that the champion with higher health has less agility and thus is unable to escape further damage when engaged or poked.
Both League champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Sejuani usually loses when taking on Kayn, with a 48.3% win rate. Therefore, Sejuani makes a bad counter to Kayn.
While Sejuani does have a lower win rate compared to Kayn, when they face off with one another, Sejuani also has a much lower learning curve that makes her a less complex character to pick up and master. You still need to be cautious when picking Sejuani into Kayn.
Furthermore, Sejuani has a good amount of utility and CC, a similar amount to Kayn. This makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there is not one best champion in League of Legends, in Sejuani vs Kayn matchups, Kayn is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your allies during teamfights.
Sejuani is a somewhat poor counter for Kayn. Make sure you focus your actions on keeping up your CS and destroying objectives. If you can do that, you should do very well as Sejuani against Kayn.
To truly master Sejuani to counter Kayn during both the laning and mid / late game phases of League of Legends, you should keep reading to pick up a few extra lessons on this matchup. If you pay attention to the build and tips shown here, you will increase your win rate significantly and be closer to League of Legends pro players.
Sejuani often racks up a similar amount of CS as Kayn. Champs who on average don't earn much CS usualy don't require much CS to be valuable teammates, such as supports. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often have to have many items to be effective. In either situation, try to exceed the values shown on this page to do well.
The top items to use in your Sejuani versus Kayn build consist of Kaenic Rookern, Sunfire Aegis, and Thornmail. When Sejuani bought at least these three pieces in her build, she performed a lot better countering Kayn than with many other common builds. In fact, Sejuani boasted an average winrate of 48.3% battling Kayn with these items in her kit.
To have the highest likelihood of vanquishing Kayn as Sejuani, you should take the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Of all the rune combinations players chose for Sejuani vs Kayn counterpicks, this blending of runes resulted in the greatest win rate. Notably, these runes gave a 48.3% winrate overall.
By default, tips, stats, and builds on how to beat Kayn as Sejuani are displayed for all ranked divisions combined. If you would like to filter the stats and builds to a specific division, you may use the selection menu located earlier in the counter matchup guide.