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.
Lead your enemy when targeting with Noxious Blast to ensure the hit.
Use Twin Fang on poisoned stationary targets like monsters and units stunned by her Petrifying Gaze for maximum damage.
The Sion Cassiopeia synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Cassiopeia, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Sion sees a large worsening in his KDA (ratio of kills and assists to deaths) when paired with Cassiopeia. His KDA worsened from NaN to NaN. This negative change shows that Cassiopeia helps Sion perform worse in competitive LoL rounds. Yet, the small difference proves that this performance change is not very impactful.
When Sion plays on the same team as Cassiopeia, he observes a barely noticable drop in his full damage output. This change could demonstrate that Cassiopeia doesn't help cover for him to dish out more damage or that her support also helps extend the game's duration. Similarly, when Sion is played together with Cassiopeia on the same side, he usually scores many fewer killing sprees compared to when he plays without Cassiopeia. This is contrasting evidence that he is worse when playing alongside Cassiopeia.
Additionally, when Sion plays with Cassiopeia on the same side, he typically takes a little less damage than when he fights alone. Receiving not as much damage may indicate that Cassiopeia does a decent job of protecting Sion in teamfights.
There is no universally accepted best synergy for Sion that will no matter what be his best synergy. However, overall, Cassiopeia is a decent ally for Sion. By locking into the same team as Sion, she increases their win rate by 2.7% to 52.9%. This signals that there is a somewhat important strategic relationship between Sion and Cassiopeia that results in them performing at the top of their game together than without each other.
Cassiopeia has a much greater difficulty compared to Sion. That means Sion players need to be very careful when finding Cassiopeia teammates to go into battle on the same side as, as they will need a much higher level of skill to cooperate well with you.
Working alongside, Sion players should expect to observe an overall large increase in your team’s capacity to deal magic damage. Together, these two can blast through enemies with magic damage.
Conversely, by aligning Sion and Cassiopeia together, you may not be granting your other teammates enough anti-tank damage dealing potential. We recommend you bring other champs on your team that helps cover this relative hole in this pairing's abilities.
Regardless of your Cassiopeia ally's ability, you should focus on maximizing your income, staying alive by avoiding foolish fights, and taking down objectives. If you heed this simple advice, you will do well anyway.
If you would like to learn all of the intricacies of Sion in order to work well with Cassiopeia during both the laning and mid / late game phases of LoL rounds, you should continue reading to learn some more tips and tricks for this champion pairing. If you listen to the build and tips displayed above, you should increase your win rate by a lot.
The ideal items to focus on in your Sion and Cassiopeia synergy build include Unending Despair, Sunfire Aegis, and Heartsteel. When Sion incorporated at least these three items in his build, he did much better when fighting alongside Cassiopeia than with most other common item sets. In fact, Sion boasted an average winrate of 52.9% helping carry Cassiopeia with this build.
To have the highest probability of vanquishing your oponents, you should equip the Grasp of the Undying, Demolish, Conditioning, Overgrowth, Minion Dematerializer, and Approach Velocity runes from the Resolve and Inspiration rune sets. Of all the rune combinations that we analyzed for this champion pairing, this combination of runes resulted in the best win rate. Notably, these runes averaged a 52.9% winrate overall.
If you want to view Sion and Cassiopeia collaboration tips and stats for a a distinct rank, please select one from the selection menu shown above. If viewing for the first time, the stats and guides given are computed using all games run with both champs.