Spreading out Hextech Micro-Rockets leads to more reliable damage and more efficiency against multiple targets, but focusing it creates the biggest impact.
The success of Electron Storm Grenade is very important to Heimerdinger's survival. The slow and stun both are capable of keeping enemies in place long enough to punish them, but it is also the first line of defense against a surprise attack.
Turret placement can be a deciding factor in a battle. Against most enemies turrets are best when they can support each other, but if the enemy has a lot of area of effect damage your turrets can be destroyed quickly. Placing turrets in brush can lead to a surprise attack in your favor.
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 Heimerdinger 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, Heimerdinger sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Sion. His KDA worsened from NaN to NaN. This decrease shows that Sion helps Heimerdinger perform poorer in ranked League of Legends rounds. Yet, the small difference shows that this performance change is not very impactful.
When Heimerdinger tries to synergize with Sion, he sees a marginal improvement in his full damage dealt. This change may demonstrate that Sion provides protection for him to deal more damage or that his presence also helps increase the round's duration. Similarly, when Heimerdinger is played together with Sion on the same side, he usually scores many fewer killing sprees compared to when he plays on his own. This is contrasting evidence that he is worse when playing with Sion.
Moreover, when Heimerdinger plays with Sion on the same side, he often takes a little more damage than when he fights alone. Taking more damage may mean that Sion does a poor job of protecting Heimerdinger during team fights.
There is no perfect champion pairing for Heimerdinger that will no matter what be his ideal teammate. However, overall, Sion is a decent teammate for Heimerdinger. By being on the same team as Heimerdinger, he increases their win rate by 1.1% to 50.7%. This clearly indicates that there is pretty good bond between Heimerdinger and Sion that results in them performing at the top of their game together than without each other.
Sion has a much lower diffuclty than Heimerdinger. That means Heimerdinger players don't need to be very careful when arranging Sion teammates to fight alongside, as they will require a much lower level of skill to be able to play well with you.
When playing on the same side, you will likely see an overall large increase in your team’s ability to soak up damage. Combined, these champs will be a great protective duo.
Conversely, by aligning Heimerdinger and Sion together, you probably will not be granting your side a lot of attack damage. We recommend you bring other champions on your team that neutralizes this relative disparity in their kit.
Regardless of your Sion ally's skill level, you should focus on increasing your gold income, warding to avoid ambushes, and clearing objectives. If you heed this simple advice, you should do well, regardless.
If you would like to truly master Heimerdinger in order to pair well with Sion during both the laning and mid / late game phases of League rounds, you should continue reading to pick up some more lessons on this champion pairing. If you listen to the build and stats presented here, you should increase your win rate significantly.
The top finished items to use in your Heimerdinger and Sion synergy build consist of Rylai's Crystal Scepter, Zaz'Zak's Realmspike, and Liandry's Torment. When Heimerdinger included at least these three items in his build, he did a lot better when paired up with Sion than with most other commonly used builds. In fact, Heimerdinger boasted an average win rate of 50.7% when playing alongside Sion with this build.
To have the greatest likelihood of vanquishing your oponents, you should take the Arcane Comet, Manaflow Band, Absolute Focus, Scorch, Biscuit Delivery, and Magical Footwear runes from the Sorcery and Inspiration rune sets. Out of all the rune builds players picked for Heimerdinger and Sion pairings, this combination of runes resulted in the highest win rate. Notably, these runes provided a 50.7% winrate overall.
By default, tips, statistics, and builds on how to synergize Sion with Heimerdinger are presented for all skill levels, merged. To scope the stats and builds to an individual player tier, you may use the selection menu located at the top of this page.