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.
Spreading out Hextech Micro-Rockets leads to more reliable damage and more efficiency against multiple targets, but focusing it creates the biggest impact.
The success of Electron Storm Grenade is very important to Heimerdinger's survival. The slow and stun both are capable of keeping enemies in place long enough to punish them, but it is also the first line of defense against a surprise attack.
Turret placement can be a deciding factor in a battle. Against most enemies turrets are best when they can support each other, but if the enemy has a lot of area of effect damage your turrets can be destroyed quickly. Placing turrets in brush can lead to a surprise attack in your favor.
The Sejuani Heimerdinger synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Heimerdinger, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Sejuani sees a large worsening in her KDA (ratio of kills and assists to deaths) when paired with Heimerdinger. His KDA fell from NaN to NaN. This negative change shows that Heimerdinger helps Sejuani perform poorer in competitive League of Legends games. Yet, the small difference proves that this performance change is not very impactful.
When Sejuani is paired with Heimerdinger, she observes a barely noticable drop in her total damage output. This change may demonstrate that Heimerdinger doesn't help protection for her to deal more damage or that his presence also helps extend the match's duration. Similarly, when Sejuani is played alongside Heimerdinger on the same team, he usually scores many fewer killing sprees compared to when she plays without Heimerdinger. This is contrasting evidence that she is worse when playing synergisticly with Heimerdinger.
Additionally, when Sejuani plays with Heimerdinger on the same team, she often receives a little more damage than when she fights alone. Getting dealt more damage could mean that Heimerdinger does a poor job of covering Sejuani during team fights.
There is no universally accepted best champion pairing for Sejuani that will no matter what be her #1 teammate. However, overall, Heimerdinger is a terrible companion for Sejuani. By locking into the same team as Sejuani, he lowers their win rate by -4.6% to 42.3%. This clearly indicates that there is an easy to overcome and exploit bond between Sejuani and Heimerdinger that results in them performing worse together than without each other.
Heimerdinger has a much greater difficulty compared to Sejuani. That means you need to be careful when arranging Heimerdinger allies to play with, as they will require a much higher level of skill to cooperate well with you.
Fighting together, Sejuani players should expect to witness an overall large increase in your team’s capacity to deal magical damage. Combined, these champions can deal quite a lot of AP type damage.
In contrast, by grouping Sejuani and Heimerdinger together, you will not be granting your team a lot of attack damage. We recommend you have other champions on your team that fills this disparity in this pairing's abilities.
Regardless of your Heimerdinger ally's skill level, you need to focus on increasing your gold income, outlasting your enemies, and taking down objectives. If you heed this simple advice, you should do well anyway.
To learn all of the intricacies of Sejuani in order to synergize with Heimerdinger during both the early game and mid / late game phases of League games, you should keep reading to gather additional lessons on this champion pairing. If you pay attention to the build and stats shown above, you will increase your win rate by a lot.
The most crucial finished items to have in your Sejuani and Heimerdinger synergy build include Sunfire Aegis, Thornmail, and Jak'Sho, The Protean. When Sejuani used at least these three finished items in her build, she performed significantly better when fighting alongside Heimerdinger than with many other common item sets. In fact, Sejuani had an average win rate of 42.3% helping carry Heimerdinger with these items in her kit.
To have the highest chance of annihilating your oponents, you should use the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Out of all the rune combinations we have analyed for this team composition, this blending of runes yielded the highest win rate. Moreover, these runes averaged a 42.3% win rate overall.
By default, tips, stats, and builds on how to pair Heimerdinger with Sejuani are given for all ranked divisions. If you want to filter the stats and builds to a distinct player tier, you may use the selection menu located earlier in the counter matchup guide.