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.
Initiate team fights using Charm, and chase down stragglers with Spirit Rush.
Spirit Rush enables Ahri's abilities, it opens up paths for Charm, helps double hitting with Orb of Deception, and closes to make use of Fox-Fire.
Use Charm to set up your combos, it will make landing Orb of Deception and Fox-Fire dramatically easier.
The Karthus Ahri synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Ahri, 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 Ahri. His KDA decreased from NaN to NaN. This negative change shows that Ahri helps Karthus perform not as well in competitive League of Legends games. Yet, the small difference proves that this performance change is not very impactful.
When Karthus tries to synergize with Ahri, he observes a small increase in his total damage dealt. This difference may demonstrate that Ahri provides cover for him to dish out more damage or that her support also helps extend the round's duration. Similarly, when Karthus is played with Ahri 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 alongside Ahri.
Additionally, when Karthus plays with Ahri on the same side, he usually takes more damage than when he fights alone. Taking more damage could mean that Ahri does a poor job of protecting Karthus in teamfights.
There is no perfect champion pairing for Karthus that will 100% of the time be his ideal teammate. However, overall, Ahri is a very bad companion for Karthus. By being on the same team as Karthus, she decreases their win rate by -5.1% to 42.2%. This proves that there is a very bad bond between Karthus and Ahri that results in them performing worse together than alone.
Ahri has a lower difficulty than Karthus. That means Karthus players don't need to be careful when lining up Ahri comrades to play with, as they will have to have a lower level of skill to work well with you.
Fighting together, you will likely observe an overall large increase in your team’s capability to to do a lot of AP damage. When paired, these champions can deal quite a lot of AP type damage.
Conversely, by bringing Karthus and Ahri together, you may not be giving your side a great deal of attack damage. Plan to bring other champions on your team that neutralizes this relative hole in this pairing's kit.
Regardless of the ability of your Ahri teammate, you should focus on increasing your income, outlasting your enemies, and clearing objectives. If you do this, you will do well, regardless.
To learn all of the intricacies of Karthus in order to work well with Ahri during both the early game and mid / late game phases of LoL matches, you should continue reading to master a few extra tips and tricks for this champion pairing. If you mind the build and tips presented here, you should grow your win rate by a lot.
The ideal items to build first in your Karthus and Ahri synergy build include Rabadon's Deathcap, Malignance, and Shadowflame. When Karthus combined at least these three great items in his build, he performed a lot better when fighting alongside Ahri than with most other commonly used builds. In fact, Karthus boasted an average winrate of 42.2% when playing alongside Ahri with these items in his kit.
To have the highest likelihood of crushing 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. Out of all the rune sets players picked for Karthus and Ahri pairings, this set of runes resulted in the greatest win rate. Moreover, these runes averaged a 42.2% win rate overall.
If you need to see Karthus and Ahri cooperations tips and builds for a a distinct division rank, please select one from the selection menu provided above. At first, the statistics and build suggestions given are computed using every round run with both champions.