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.
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 Ahri Karthus synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Karthus, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Ahri sees a large worsening in her KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA decreased from NaN to NaN. This negative change shows that Karthus helps Ahri perform poorer in ranked League rounds. Yet, the small difference demonstrates that this performance change is not very impactful.
When Ahri is an ally to Karthus, she gets a small increase in her total damage dealt. This may demonstrate that Karthus provides cover for her to dish out more damage or that his presence also helps increase the game's duration. Similarly, when Ahri is played alongside Karthus on the same team, he usually scores many fewer killing sprees compared to when she plays alone. This is contrasting evidence that she is worse when playing alongside Karthus.
Additionally, when Ahri plays with Karthus on the same team, she usually receives more damage than when she fights alone. Receiving more damage could indicate that Karthus does a poor job of covering Ahri in team fights.
There is no top champion pairing for Ahri that will no matter what be her best teammate. However, overall, Karthus is a very bad companion for Ahri. By being on the same side as Ahri, he lowers their win rate by -6.0% to 42.2%. This clearly indicates that there is an easy to overcome and exploit strategic relationship between Ahri and Karthus that allows them to perform worse together than alone.
Karthus has a greater difficulty than Ahri. That means Ahri players must be cautious when lining up Karthus comrades to play with, as they will require a greater level of skill to be able to cooperate well with you.
Fighting on the same side, Ahri players will likely witness an overall large increase in your team’s capacity to deal magic damage. When paired, these two can blast through enemies with magic damage.
Conversely, by grouping Ahri and Karthus together, you will not be giving your side much AD. Make sure to include other champs on your team that neutralizes this relative gap in this pairing's kit.
Regardless of the skill of your Karthus ally, you should focus on maximizing your gold income, warding to avoid ambushes, and taking down objectives. If you do this, you should do well anyway.
If you would like to learn all of the intricacies of Ahri in order to synergize with Karthus during both the early game and mid / late game phases of LoL rounds, you should keep reading to pick up some more tricks and insights into this champion pairing. If you pay attention to the build and tips shown here, you will grow your win rate significantly.
The best items to have in your Ahri and Karthus synergy build include Shadowflame, Stormsurge, and Luden's Companion. When Ahri included at least these three finished items in her build, she did much better when fighting alongside Karthus than with most other common builds. In fact, Ahri boasted an average winrate of 42.2% helping carry Karthus with these items in her kit.
To have the highest likelihood of annihilating your oponents, Ahri players should equip the Electrocute, Taste of Blood, Eyeball Collection, Ultimate Hunter, Manaflow Band, and Transcendence runes from the Domination and Sorcery rune sets. Of all the rune builds players chose for this team composition, this mix of runes yielded the highest win rate. In fact, these runes averaged a 42.2% winrate overall.
If you want to get Ahri and Karthus synergy tips and stats for a an individual skill level, please choose one from the selection menu above. By default, the statistics and strategies given are calculated using every game finished with these champions.