Use Arctic Assault to escape bad situations, interupt channeled spells or chase runners.
Save Glacial Prison for encounters where you have teammates present to take advantage of it.
Melee allies can stack Frost for your Permafrost, keep an eye on who they are attacking.
Katarina's abilities deal magic damage, so even if she's building Attack Damage items, get magic resistance to counter her.
Try to save a disable for when Katarina uses her Death Lotus.
The stat comparisons shown on this page feature some important Sejuani against Katarina matchup statistics that can help us interpret the differences and similarities between these two champs. As an example, Sejuani’s KDA ratio ([kills + assists] / deaths) of NaN is more than Katarina’s KDA ratio of NaN, indicating that Sejuani may be more central to her team's team fighting potential than Katarina. This observation is in large part fueled by the differences in assists.
Sejuani usually has a significantly smaller longest killing spree than her counter does. On average, she receives more damage than Katarina. This commonly reflects different amounts of tankyness, yet it can also illustrate that the one champ has less agility and thus is unable to flee from further damage when poked or engaged.
Both League champions are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Sejuani usually fairs equally well when taking on Katarina, with a 50.0% win rate. As a result, Sejuani makes an ok counter to Katarina.
While Sejuani does have a higher winrate compared to Katarina, when they face off with one another, Sejuani also has a much lower level of difficulty that makes her a less difficult champ to develop with. You still need to be cautious when picking Sejuani into Katarina.
Furthermore, Sejuani also has a good amount of CC and other utility, a similar amount to Katarina. 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 Katarina matchups, Katarina is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Sejuani is a decent counter for Katarina. You will do well by focussing your actions on maximizing your gold and cs and destroying objectives. If you can do that, you should hold your own as Sejuani against Katarina.
If you would like to learn all of the intricacies of Sejuani in order to counter Katarina during both the early game 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 listen to the build and suggestions displayed above, you will increase your win rate by a lot and be closer to League of Legends pro players.
Sejuani often racks up less CS relative to Katarina. Champions who on average don't earn many minion kills often don't need much CS to be valuable teammates, such as sup champs. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically require several high cost items to be effective. In either situation, try to surpass the numbers displayed on this page to do well.
The top items to have in your Sejuani versus Katarina build include Sunfire Aegis, Thornmail, and Warmog's Armor. When Sejuani combined at least these three items in her build, she performed a lot better vs. Katarina than with most other common builds. In fact, Sejuani had an average winrate of 50.0% battling Katarina with this build.
To have the highest likelihood of crushing Katarina as Sejuani, Sejuani players should take the Aftershock, Font of Life, Conditioning, Overgrowth, Triumph, and Legend: Alacrity runes from the Resolve and Precision rune sets. Of all the rune sets players chose for Sejuani vs Katarina counterpicks, this sequence of runes yielded the greatest win rate. In fact, these runes gave a 50.0% winrate overall.
If you need to view Sejuani x Katarina tips and counter builds for a an individual division rank, feel free to select one from the selection menu provided above. If viewing for the first time, the statistics and build suggestions shown are calculated using every match finished with these champions.