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.
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 Xin Zhao 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, Xin Zhao sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA fell from NaN to NaN. This decrease shows that Karthus helps Xin Zhao perform poorer in competitive League of Legends games. Yet, the small difference proves that this performance change is not very impactful.
When Xin Zhao is an ally to Karthus, he gets a noticable increase in his total damage dealt. This difference may indicate that Karthus provides protection for him to dish out more damage or that his allyship also helps extend the match's duration. Similarly, when Xin Zhao is played together with Karthus on the same team, 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 with Karthus.
Additionally, when Xin Zhao plays with Karthus on the same team, he typically takes a little more damage than when he fights alone. Taking more damage may mean that Karthus does a poor job of protecting Xin Zhao in team fights.
There is no one best companion for Xin Zhao that will 100% of the time be his ideal teammate. However, overall, Karthus is a relatively poor ally for Xin Zhao. By playing on the same team as Xin Zhao, he drops their win rate by -2.2% to 48.7%. This shows that there is a bad synergy between Xin Zhao and Karthus that allows them to perform not as well together than without each other.
Karthus has a much greater difficulty compared to Xin Zhao. That means you must be very careful when arranging Karthus comrades to fight alongside, as they will require a much higher level of skill to work well with you.
Working on the same side, Xin Zhao players should see an overall large increase in your team’s ability to deal magical damage. Together, these champions can blast through enemies with magic damage.
Although, by aligning Xin Zhao and Karthus together, you will not be providing your other allies a great deal of support. We recommend you bring other champs on your team that helps cover this relative disparity in their capabilities.
Regardless of the skill of your Karthus teammate, you should focus on maximizing your income, warding to avoid ambushes, and taking down objectives. If you follow these simple suggestions, you will do well anyway.
To learn all of the intricacies of Xin Zhao to work well with Karthus during both the lane and mid / late game phases of League of Legends games, you should continue reading to pick up a few extra tips and tricks for this champion pairing. If you use the build and tips shown above, you should grow your win rate by a lot.
The most crucial items to get in your Xin Zhao and Karthus synergy build consist of Sterak's Gage, Titanic Hydra, and Sundered Sky. When Xin Zhao combined at least these three pieces in his build, he performed much better when paired up with Karthus than with most other common builds. In fact, Xin Zhao boasted an average win rate of 48.7% when synergizing his build and playstyle to Karthus with these items in his kit.
To have the highest likelihood of annihilating your oponents, you should equip the Lethal Tempo, Triumph, Legend: Alacrity, Coup de Grace, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the runes players chose for this champion pairing, this mixture of runes yielded the greatest win rate. In fact, these runes gave a 48.7% win rate overall.
By default, tips, stats, and builds on how to team up Karthus with Xin Zhao are presented for all ranked divisions combined. If you want to filter the statistics and builds to an individual division, you may use the selection menu earlier in the counter matchup guide.