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.
Remember that nearby enemies can see which wall you're in.
Look at the line-up of both your team and the enemy's team when picking your form.
The Karthus Kayn synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Kayn, 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 Kayn. His KDA decreased from NaN to NaN. This drop shows that Kayn helps Karthus perform not as well in ranked League of Legends matches. Yet, the small difference indicates that this performance change is only marginal.
When Karthus tries to synergize with Kayn, he observes a little increase in his complete damage output. This could signal that Kayn supports by providing protection for him to dish out more damage or that his presence on the team also helps extend the game's duration. Similarly, when Karthus is played with Kayn on the same team, he usually scores many fewer killing sprees than when he plays on his own. This is contrasting evidence that he is worse when playing alongside Kayn.
Moreover, when Karthus plays with Kayn on the same team, he usually receives much less damage than when he fights alone. Getting dealt not as much damage may mean that Kayn does a decent job of covering Karthus in teamfights.
There is no ideal ally for Karthus that will always be his ideal synergy. Yet, overall, Kayn is a fantastic ally for Karthus. By being on the same team as Karthus, he increases their win rate by 3.2% to 50.5%. This demonstrates that there is an important synergy between Karthus and Kayn that allows them to perform better together than alone.
Kayn has a greater difficulty than Karthus. That means Karthus players must be cautious when enlisting Kayn teammates to play with, as they will require a greater level of skill to be able to cooperate well with you.
Working together, Karthus players should expect to observe an overall large increase in your team’s capability to dish out massive AD. Combined, these two should be able to take down targets with auto-attacks and other AD damage abilities.
Although, by bringing Karthus and Kayn together, you will not be providing your other allies enough utility. Plan to pick other champs on your team that helps cover this hole in this pairing's playstyle.
Regardless of your Kayn ally's skill level, you should focus on increasing your gold income, warding to avoid ambushes, and taking down objectives. If you follow these simple suggestions, you will do well, regardless.
To learn all of the intricacies of Karthus to work well with Kayn during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up additional tips and tricks for this champion pairing. If you pay attention to the build and stats presented above, you should grow your win rate by a lot.
The top items to have in your Karthus and Kayn synergy build consist of Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus bought at least these three items in his build, he did significantly better when fighting alongside Kayn than with most other common item sets. In fact, Karthus boasted an average win rate of 50.5% helping carry Kayn with this build.
To have the best chance of defeating 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. Out of all the runes that we analyzed for this team composition, this blending of runes resulted in the greatest win rate. Moreover, these runes provided a 50.5% win rate overall.
By default, tips, stats, and builds on how to pair Kayn with Karthus are given for all skill levels, merged. If you want to scope the statistics and builds to an individual skill level, you can use the selection menu located at the top of this page.