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.
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 Kassadin Sion synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Sion, 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 large worsening in his 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 Kassadin perform worse in ranked LoL games. Yet, the small difference shows that this performance change is only marginal.
When Kassadin plays on the same team as Sion, he observes a marginal improvement in his total damage output. This change may indicate that Sion provides cover for him to dish out more damage or that his allyship also helps increase the game's duration. Similarly, when Kassadin is played alongside Sion on the same team, he usually scores many fewer killing sprees compared to when he plays without Sion. This is contrasting evidence that he is worse when playing with Sion.
Additionally, when Kassadin plays with Sion on the same side, he on average takes more damage than when he plays alone. Receiving more damage may indicate that Sion does a poor job of covering Kassadin in team fights.
There is no universally accepted best ally for Kassadin that will no matter what be his top ally. However, overall, Sion is a pretty good teammate for Kassadin. By playing on the same side as Kassadin, he increases their win rate by 1.1% to 51.1%. This demonstrates that there is a good bond between Kassadin and Sion that allows them to perform better together than without each other.
Sion has a much lower diffuclty than Kassadin. That means Kassadin players don't need to be careful when lining up Sion teammates to play with, as they will have to have a much lower level of skill to be able to do well with you.
Working together, Kassadin players should expect to observe an overall large increase in your team’s ability to tank a lot of damage. When paired, these two might be able to provide enough cover for their team's carries.
In contrast, by pairing Kassadin and Sion together, you will not be granting your team much attack damage. Plan to bring other champions on your team that helps cover this disparity in this pairing's kit.
Regardless of your Sion ally's ability, you should focus on maximizing your gold income, warding to avoid ambushes, and taking down objectives. If you follow these simple suggestions, you should do well, regardless.
To learn all of the intricacies of Kassadin to pair well with Sion during both the early game and mid / late game phases of League of Legends matches, you should continue reading to master a few extra tricks and insights into this champion pairing. If you mind the build and stats shown here, you will grow your win rate by a lot.
The most crucial items to include in your Kassadin and Sion synergy build include Seraph's Embrace, Malignance, and Zhonya's Hourglass. When Kassadin used at least these three items in his build, he performed significantly better when paired up with Sion than with most other common builds. In fact, Kassadin had an average win rate of 51.1% helping carry Sion with these items in his kit.
To have the greatest chance of vanquishing 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 combinations players used for Kassadin and Sion pairings, this blending of runes resulted in the greatest win rate. In fact, these runes gave a 51.1% win rate overall.
If you would like to get Kassadin with Sion collaboration tips and builds for a an individual player tier, feel free to choose one from the selection menu displayed above. If viewing for the first time, the statistics and build suggestions displayed are calculated using all rounds with data with these champions.