Kassadin's ultimate has many uses and is on a shorter cooldown than most, use it often.
Kassadin has multiple item paths; he can go caster via Mana and Ability Power or anti-caster with Cooldown Reduction and Magic Resist.
Try to get the Ancient Golem buff to counteract Riftwalk's increasing Mana cost.
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.
The Kassadin Sejuani synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Sejuani, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Kassadin sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Sejuani. His KDA went down from NaN to NaN. This fall shows that Sejuani helps Kassadin perform worse in competitive League matches. Yet, the small difference shows that this performance change is not very impactful.
When Kassadin is an ally to Sejuani, he gets a marginal improvement in his total damage dealt. This difference could demonstrate that Sejuani helps provide cover for him to deal more damage or that her support also helps increase the game's duration. Similarly, when Kassadin is played together with Sejuani on the same side, he usually scores many fewer killing sprees than when he plays without Sejuani. This is contrasting evidence that he is worse when playing with Sejuani.
Moreover, when Kassadin plays with Sejuani on the same side, he usually takes a little more damage than when he fights alone. Taking more damage could mean that Sejuani does a poor job of covering Kassadin in teamfights.
There is no ideal ally for Kassadin that will no matter what be his best teammate. Yet, Sejuani is a terrible ally for Kassadin. By playing on the same side as Kassadin, she lowers their win rate by -4.8% to 45.2%. This proves that there is a very bad bond between Kassadin and Sejuani that allows them to perform not as well together than without each other.
Sejuani has a much lower diffuclty than Kassadin. That means Kassadin players don't need to be very careful when finding Sejuani comrades to go into battle on the same side as, as they will have to have a much lower level of skill to fight well with you.
Playing on the same side, Kassadin players should expect to see an overall large increase in your team’s capacity to deal magical damage. Together, these champs are able to dish out a surprising amount of magic type damage.
Although, by bringing Kassadin and Sejuani together, you probably will not be giving your other teammates much AD. We recommend you pick other champions on your team that helps cover this hole in their potential.
Regardless of your Sejuani ally's ability, you should focus on maximizing your gold income, outlasting your enemies, and taking down objectives. If you do this, you should do well anyway.
To truly master Kassadin to work well with Sejuani during both the early game and mid / late game phases of League of Legends rounds, you should continue reading to pick up additional tips and tricks for this champion pairing. If you listen to the build and tips presented here, you will grow your win rate by a lot.
The most crucial items to include in your Kassadin and Sejuani synergy build include Seraph's Embrace, Rabadon's Deathcap, and Malignance. When Kassadin combined at least these three great items in his build, he did much better when paired up with Sejuani than with most other common item sets. In fact, Kassadin boasted an average win rate of 45.2% when playing alongside Sejuani with this build.
To have the best likelihood of crushing your oponents, Kassadin players should equip the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Sudden Impact, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune sets we have analyed for this team composition, this set of runes resulted in the best win rate. Notably, these runes gave a 45.2% winrate overall.
By default, tips, stats, and builds on how to synergize Sejuani with Kassadin are given for all skill levels, merged. If you would like to filter the statistics and builds to a specific division, you can use the selection menu earlier in the counter matchup guide.