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.
Try to position yourself so your ultimate's knockback is most effective.
Xin Zhao is a great initiator to combat. Lead the front to start a fight and use your ultimate to do the most damage possible.
The Karthus Xin Zhao synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Xin Zhao, 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 Xin Zhao. His KDA fell from NaN to NaN. This decrease shows that Xin Zhao helps Karthus perform poorer in ranked League of Legends games. Yet, the small difference demonstrates that this performance change is only marginal.
When Karthus is an ally to Xin Zhao, he sees a little increase in his complete damage dealt. This change could demonstrate that Xin Zhao provides cover for him to deal more damage or that his presence also helps extend the round's duration. Similarly, when Karthus is played alongside Xin Zhao on the same side, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing with Xin Zhao.
Additionally, when Karthus plays with Xin Zhao on the same team, he typically receives much less damage than when he fights alone. Taking not as much damage could mean that Xin Zhao does a decent job of protecting Karthus in teamfights.
There is no one best companion for Karthus that will 100% of the time be his best synergy. However, overall, Xin Zhao is a good companion for Karthus. By locking into the same side as Karthus, he increases their win rate by 1.4% to 48.7%. This signals that there is a potentially meaningful strategic relationship between Karthus and Xin Zhao that allows them to perform better together than alone.
Xin Zhao has a much lower diffuclty than Karthus. That means you don't need to be cautious when enlisting Xin Zhao allies to fight alongside, as they will have to have a much lower level of skill to be able to cooperate well with you.
When playing alongside, you will likely witness an overall large increase in your team’s capacity to deal magical damage. Combined, these champions can deal quite a lot of AP type damage.
Conversely, by pairing Karthus and Xin Zhao together, you probably will not be giving your side a great deal of utility. Plan to pick other champs on your team that helps cover this disparity in this pairing's capabilities.
Regardless of the ability of your Xin Zhao ally, you should focus on increasing your income, outlasting your enemies, and taking down objectives. If you follow these simple suggestions, you will do well anyway.
If you would like to truly master Karthus in order to work well with Xin Zhao during both the laning and mid / late game phases of League rounds, you should continue reading to master some more lessons on this champion pairing. If you pay attention to the build and tips presented above, you should grow your win rate by a lot.
The ideal finished items to have in your Karthus and Xin Zhao synergy build include Malignance, Shadowflame, and Stormsurge. When Karthus used at least these three pieces in his build, he performed much better as an ally of Xin Zhao than with most other typical item sets. In fact, Karthus boasted an average winrate of 48.7% when playing alongside Xin Zhao with this build.
To have the greatest chance of vanquishing your oponents, Karthus players should equip the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Of all the runes players used for Karthus and Xin Zhao pairings, this combination of runes resulted in the top win rate. Notably, these runes provided a 48.7% winrate overall.
If you want to see Karthus and Xin Zhao synergy tips and stats for a a distinct division, please select one from the selection menu provided above. If viewing for the first time, the stats and build suggestions displayed are computed using all rounds played with these champions.