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.
Lay Waste is very strong at farming minions and harassing enemy champions.
Ask your allies to help point out when you should use Requiem to get kills in different lanes.
The Heimerdinger Karthus synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Karthus, 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 large worsening in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA went down from NaN to NaN. This decrease shows that Karthus helps Heimerdinger perform not as well in competitive LoL matches. Yet, the small difference proves that this performance change is not very impactful.
When Heimerdinger is paired with Karthus, he gets a little decrease in his full damage dealt. This change may indicate that Karthus does not support by providing cover for him to deal more damage or that his presence on the team also helps increase the game's duration. Similarly, when Heimerdinger is played alongside Karthus on the same team, he usually scores many fewer killing sprees compared to when he plays alone. This is contrasting evidence that he is worse when playing synergisticly with Karthus.
Additionally, when Heimerdinger plays with Karthus on the same team, he often receives more damage than when he plays alone. Getting dealt more damage could indicate that Karthus does a poor job of covering Heimerdinger in teamfights.
There is no universally accepted best synergy for Heimerdinger that will always be his ideal synergy. However, Karthus is a very bad companion for Heimerdinger. By being on the same team as Heimerdinger, he decreases their win rate by -6.1% to 43.5%. This clearly indicates that there is an easy to overcome and exploit strategic relationship between Heimerdinger and Karthus that results in them performing not as well together than without each other.
Karthus has a lower difficulty than Heimerdinger. That means you don't need to be cautious when lining up Karthus comrades to go into battle on the same side as, as they will have to have a lower level of skill to be able to work well with you.
When playing on the same side, you should observe an overall large increase in your team’s capability to to do a lot of AP damage. Together, these champions can deal quite a lot of AP type damage.
In contrast, by pairing Heimerdinger and Karthus together, you will not be granting your other teammates much anti-tank damage dealing potential. We recommend you include other champs on your team that neutralizes this disparity in their abilities.
Regardless of the skill of your Karthus teammate, you should focus on increasing your gold income, outlasting your enemies, and clearing objectives. If you follow these simple suggestions, you will do well, regardless.
If you would like to truly master Heimerdinger to pair well with Karthus during both the lane and mid / late game phases of League of Legends rounds, you should keep reading to master a few extra tips and tricks for this champion pairing. If you pay attention to the build and stats presented above, you should increase your win rate by a lot.
The ideal items to include in your Heimerdinger and Karthus synergy build include Rylai's Crystal Scepter, Zaz'Zak's Realmspike, and Liandry's Torment. When Heimerdinger bought at least these three great items in his build, he did much better when fighting alongside Karthus than with most other common item sets. In fact, Heimerdinger had an average winrate of 43.5% when synergizing his build and playstyle to Karthus with these items in his kit.
To have the highest likelihood of crushing your oponents, you should equip the Arcane Comet, Manaflow Band, Absolute Focus, Scorch, Taste of Blood, and Treasure Hunter runes from the Sorcery and Domination rune sets. Of all the rune combinations we have analyed for Heimerdinger and Karthus pairings, this blending of runes resulted in the best win rate. Moreover, these runes averaged a 43.5% win rate overall.
By default, tips, statistics, and builds on how to team up Karthus with Heimerdinger are presented for all ranked divisions. If you want to narrow the stats and builds to a specific rank, you can use the selection menu earlier on the page.