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.
Roar of the Slayer is a great setup ability to land a very powerful Decimating Smash.
The Soul Furnace buff displays how much shield strength is remaining, use this information to time its explosion perfectly.
You only have very slight turning ability during Unstoppable Onslaught, so make sure to use it in straight paths.
The Sejuani Sion synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Sion, 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 very large drop in her KDA (ratio of kills and assists to deaths) when paired with Sion. His KDA fell from NaN to NaN. This negative change shows that Sion helps Sejuani perform not as well in ranked League of Legends rounds. Yet, the small difference demonstrates that this performance change is only marginal.
When Sejuani is an ally to Sion, she gets a marginal improvement in her complete damage dealt. This difference could demonstrate that Sion supports by providing cover for her to dish out more damage or that his support also helps extend the match's duration. Similarly, when Sejuani is played with Sion on the same side, he usually scores many fewer killing sprees than when she plays on his own. This is contrasting evidence that she is worse when playing alongside Sion.
Moreover, when Sejuani plays with Sion on the same side, she often receives more damage than when she fights alone. Getting dealt more damage may mean that Sion does a poor job of covering Sejuani in teamfights.
There is no perfect champion pairing for Sejuani that will always be her ideal teammate. Yet, overall, Sion is a not very good teammate for Sejuani. By being on the same side as Sejuani, he lowers their win rate by -2.5% to 44.4%. This shows that there is a negative bond between Sejuani and Sion that results in them performing worse together than alone.
Sion has a greater difficulty than Sejuani. That means you need to be very careful when arranging Sion comrades to play with, as they will need a greater level of skill to fight well with you.
Playing cooperatively, Sejuani players should expect to witness an overall large increase in your team’s capacity to to cover for your other teammates. When paired, these champions might be able to provide enough cover for their team's carries.
In contrast, by grouping Sejuani and Sion together, you probably will not be granting your team much AP. Plan to have other champs on your team that fills this relative hole in this pairing's potential.
Regardless of your Sion ally's skill level, you need to focus on increasing your gold income, warding to avoid ambushes, and taking down objectives. If you follow these simple suggestions, you will do well anyway.
If you would like to truly master Sejuani in order to work well with Sion during both the lane and mid / late game phases of League of Legends games, you should keep reading to master additional lessons on this champion pairing. If you listen to the build and suggestions shown above, you will increase your win rate by a lot.
The most important items to build first in your Sejuani and Sion synergy build include Kaenic Rookern, Sunfire Aegis, and Thornmail. When Sejuani used at least these three great items in her build, she did significantly better as an ally of Sion than with many other commonly used item sets. In fact, Sejuani boasted an average winrate of 44.4% helping carry Sion with these items in her kit.
To have the highest probability of annihilating your oponents, 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 builds players used for this champion pairing, this set of runes resulted in the top win rate. In fact, these runes gave a 44.4% winrate overall.
If you need to view Sejuani and Sion collaboration tips and builds for a a distinct rank, feel free to select one from the selection menu displayed above. By default, the statistics and strategies shown are computed using all rounds run with both champions.