Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.
Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.
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 Jax 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, Jax 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 Jax perform poorer in ranked LoL matches. Yet, the small difference shows that this performance change is not very impactful.
When Jax plays on the same team as Sion, he observes a barely noticable drop in his complete damage dealt. This difference could indicate that Sion does not provide protection for him to deal more damage or that his support also helps increase the game's duration. Similarly, when Jax is played with Sion on the same side, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing alongside Sion.
Additionally, when Jax plays with Sion on the same team, he usually takes more damage than when he plays alone. Taking more damage may indicate that Sion does a poor job of covering Jax during teamfights.
There is no top champion pairing for Jax that will 100% of the time be his best teammate. Yet, Sion is a pretty good teammate for Jax. By locking into the same team as Jax, he raises their win rate by 2.5% to 53.3%. This clearly indicates that there is pretty good synergy between Jax and Sion that results in them performing better together than alone.
Sion has a lower difficulty than Jax. That means Jax players don't need to be cautious when arranging Sion allies to fight alongside, as they will need a lower level of skill to be able to cooperate well with you.
Playing on the same side, Jax players will likely see an overall large increase in your team’s capability to soak up damage. When paired, these champs will be a great protective duo.
Although, by pairing Jax and Sion together, you will not be providing your other teammates a lot of AP. Plan to have other champs on your team that neutralizes this relative disparity in their abilities.
Regardless of your Sion ally's skill level, you need to focus on maximizing your gold income, staying alive by avoiding foolish fights, and taking down objectives. If you follow these simple suggestions, you should do well anyway.
To truly master Jax to work well with Sion during both the laning and mid / late game phases of League of Legends games, you should keep reading to master additional lessons on this champion pairing. If you pay attention to the build and suggestions displayed here, you will increase your win rate significantly.
The most crucial items to build first in your Jax and Sion synergy build consist of Sterak's Gage, Spear of Shojin, and Sundered Sky. When Jax used at least these three items in his build, he did much better as an ally of Sion than with many other typical builds. In fact, Jax had an average winrate of 53.3% helping carry Sion with these items in his kit.
To have the greatest chance of coming out on top against your oponents, Jax players should use the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the runes that we analyzed for Jax and Sion pairings, this set of runes resulted in the greatest win rate. Moreover, these runes gave a 53.3% win rate overall.
By default, tips, statistics, and builds on how to pair Sion with Jax are shown for all ranked divisions. If you want to narrow the stats and builds to a specific skill level, you should use the selection menu located earlier in the counter matchup guide.