You can use Comet of Legend's flight to grow Starsurge to massive proportions.
Comet of Legend allows you to move quickly around the map; use it to put pressure on other lanes.
Save Voice of Light to use as a defense against melee opponents if you need to - otherwise, use its slow to start a fight at long range.
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 Aurelion Sol 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, Aurelion Sol sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Sejuani. His KDA worsened from NaN to NaN. This drop shows that Sejuani helps Aurelion Sol perform poorer in competitive League games. Yet, the small difference indicates that this performance change is only marginal.
When Aurelion Sol is paired with Sejuani, he sees a marginal improvement in his complete damage dealt. This may signal that Sejuani helps provide protection for him to deal more damage or that her allyship also helps increase the game's duration. Similarly, when Aurelion Sol is played with Sejuani on the same side, he usually scores many fewer killing sprees compared to when he plays alone. This is contrasting evidence that he is worse when playing synergisticly with Sejuani.
Moreover, when Aurelion Sol plays with Sejuani on the same team, he typically takes a little more damage than when he fights alone. Receiving more damage could mean that Sejuani does a poor job of covering Aurelion Sol during team fights.
There is no one best synergy for Aurelion Sol that will always be his ideal synergy. Yet, overall, Sejuani is a relatively poor ally for Aurelion Sol. By being on the same team as Aurelion Sol, she drops their win rate by -2.8% to 47.8%. This shows that there is a harmful synergy between Aurelion Sol and Sejuani that results in them performing not as well together than without each other.
Sejuani has a much lower diffuclty than Aurelion Sol. That means you don't need to be careful when finding Sejuani comrades to go into battle on the same side as, as they will require a much lower level of skill to fight well with you.
Fighting cooperatively, Aurelion Sol players should see an overall large increase in your team’s ability to deal magic damage. Combined, these champs can deal quite a lot of AP type damage.
Conversely, by grouping Aurelion Sol and Sejuani together, you will not be providing your side much attack damage. Make sure to bring other champions on your team that nullifies this hole in their potential.
Regardless of the skill of your Sejuani ally, you need to focus on increasing your income, staying alive by avoiding foolish fights, and clearing objectives. If you do this, you should do well anyway.
If you would like to truly master Aurelion Sol to pair well with Sejuani during both the lane and mid / late game phases of League of Legends matches, you should continue reading to pick up some more tips and tricks for this champion pairing. If you listen to the build and stats displayed here, you will increase your win rate by a lot.
The best items to build first in your Aurelion Sol and Sejuani synergy build include Seraph's Embrace, Rabadon's Deathcap, and Rylai's Crystal Scepter. When Aurelion Sol combined at least these three items in his build, he did significantly better when fighting alongside Sejuani than with most other commonly used builds. In fact, Aurelion Sol had an average win rate of 47.8% when playing alongside Sejuani with this build.
To have the highest likelihood of crushing your oponents, you should equip the Arcane Comet, Manaflow Band, Transcendence, Gathering Storm, Magical Footwear, and Minion Dematerializer runes from the Sorcery and Inspiration rune sets. Of all the rune combinations that we analyzed for Aurelion Sol and Sejuani pairings, this combination of runes yielded the top win rate. In fact, these runes provided a 47.8% win rate overall.
By default, tips, stats, and builds on how to synergize Sejuani with Aurelion Sol are displayed for all skill levels, merged. To scope the stats and builds to a particular division, you can use the selection menu earlier on the page.