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 Karthus Rell synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Rell, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Karthus sees a large worsening in his KDA (ratio of kills and assists to deaths) when paired with Rell. His KDA went down from NaN to NaN. This decrease shows that Rell helps Karthus perform poorer in competitive League of Legends rounds. Yet, the small difference shows that this performance change is not very impactful.
When Karthus is an ally to Rell, he sees a small increase in his full damage output. This could indicate that Rell helps provide protection for him to deal more damage or that her presence also helps extend the match's duration. Similarly, when Karthus is played alongside Rell on the same side, he usually scores many fewer killing sprees than when he plays without Rell. This is contrasting evidence that he is worse when playing with Rell.
Additionally, when Karthus plays with Rell on the same side, he usually receives a little less damage than when he fights alone. Taking not as much damage may indicate that Rell does a decent job of protecting Karthus during teamfights.
There is no universally accepted best ally for Karthus that will no matter what be his ideal synergy. Yet, overall, Rell is a pretty good companion for Karthus. By being on the same side as Karthus, she improves their win rate by 2.6% to 49.9%. This signals that there is a potentially meaningful bond between Karthus and Rell that allows them to perform stronger together than alone.
Rell has a much lower diffuclty than Karthus. That means Karthus players don't need to be careful when enlisting Rell comrades to play with, as they will have to have a much lower level of skill to cooperate well with you.
Playing together, Karthus players should expect to observe an overall large increase in your team’s ability to support your allies. When paired, these champions may be able to carry with the power of their abilities.
In contrast, by pairing Karthus and Rell together, you will not be granting your other allies much attack damage. We recommend you have other champions on your team that fills this relative gap in this pairing's abilities.
Regardless of the ability of your Rell teammate, you need to focus on increasing your gold income, warding to avoid ambushes, and clearing objectives. If you heed this simple advice, you should do well anyway.
To learn all of the intricacies of Karthus to synergize with Rell during both the lane and mid / late game phases of LoL rounds, you should keep reading to gather additional lessons on this champion pairing. If you use the build and tips presented above, you will grow your win rate by a lot.
The most crucial finished items to have in your Karthus and Rell synergy build include Rabadon's Deathcap, Malignance, and Shadowflame. When Karthus included at least these three pieces in his build, he performed significantly better when fighting alongside Rell than with many other common builds. In fact, Karthus boasted an average win rate of 49.9% helping carry Rell with this build.
To have the highest chance of vanquishing your oponents, Karthus players should use the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Eyeball Collection, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Of all the rune sets we have analyed for this team composition, this combination of runes resulted in the greatest win rate. Notably, these runes provided a 49.9% winrate overall.
By default, tips, stats, and builds on how to synergize Rell with Karthus are shown for all ranked divisions. To filter the stats and builds to a particular skill level, you can use the selection menu located above.