Cast World Ender when you are sure you can force a fight.
Use Umbral Dash while casting The Darkin Blade to increase your chances of hitting the enemy.
Crowd Control abilities like Infernal Chains or your allies' immobilizing effects will help you set up The Darkin Blade.
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 Aatrox 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, Aatrox sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA went down from NaN to NaN. This worsening shows that Karthus helps Aatrox perform poorer in competitive League rounds. Yet, the small difference shows that this performance change is not very impactful.
When Aatrox is an ally to Karthus, he sees a small increase in his complete damage dealt. This difference could indicate that Karthus helps provide cover for him to dish out more damage or that his support also helps extend the round's duration. Similarly, when Aatrox is played alongside Karthus on the same side, he usually scores many fewer killing sprees than when he plays on his own. This is contrasting evidence that he is worse when playing synergisticly with Karthus.
Moreover, when Aatrox plays with Karthus on the same side, he on average receives a little more damage than when he fights alone. Getting dealt more damage may indicate that Karthus does a poor job of protecting Aatrox during team fights.
There is no perfect synergy for Aatrox that will 100% of the time be his ideal teammate. Yet, overall, Karthus is a relatively poor companion for Aatrox. By being on the same side as Aatrox, he drops their win rate by -2.1% to 48.3%. This shows that there is a negative bond between Aatrox and Karthus that allows them to perform not as well together than without each other.
Karthus has a greater difficulty than Aatrox. That means you must be very careful when lining up Karthus teammates to go into battle on the same side as, as they will need a greater level of skill to fight well with you.
Playing together, you should expect to witness an overall large increase in your team’s ability to to do a lot of AP damage. Together, these champions can blast through enemies with magic damage.
In contrast, by pairing Aatrox and Karthus together, you may not be providing your other teammates very much engage potential. Make sure to pick other champions on your team that neutralizes this disparity in this pairing's kit.
Regardless of your Karthus ally's ability, you need to focus on increasing your income, staying alive by avoiding foolish fights, and taking down objectives. If you heed this simple advice, you will do well anyway.
If you would like to learn all of the intricacies of Aatrox in order to work well with Karthus during both the laning and mid / late game phases of League games, you should keep reading to learn a few extra tricks and insights into this champion pairing. If you pay attention to the build and tips presented above, you will increase your win rate significantly.
The top items to get in your Aatrox and Karthus synergy build include Spear of Shojin, Sundered Sky, and Eclipse. When Aatrox used at least these three pieces in his build, he performed much better as an ally of Karthus than with most other commonly used item sets. In fact, Aatrox boasted an average win rate of 48.3% helping carry Karthus with these items in his kit.
To have the highest chance of vanquishing your oponents, you should take the Conqueror, Triumph, Legend: Tenacity, Last Stand, Bone Plating, and Revitalize runes from the Precision and Resolve rune sets. Out of all the rune combinations players used for this champion pairing, this sequence of runes resulted in the greatest win rate. Notably, these runes gave a 48.3% winrate overall.
If you would like to get Aatrox and Karthus cooperations tips and builds for a a particular rank, please select one from the selection menu provided above. At first, the statistics and build suggestions displayed are computed using every game run with both champions.