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 Bel'Veth Karthus synergy stats shown here demonstrate the areas of their gameplay that do better (or worse) when paired with Karthus, compared to their overall stats. Significant differences are areas of focus that highlight how their gameplay changes when paired with this other champion.
Overall, Bel'Veth sees a very large drop in their KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA fell from NaN to NaN. This fall shows that Karthus helps Bel'Veth perform worse in competitive League of Legends rounds. Yet, the small difference demonstrates that this performance change is only marginal.
When Bel'Veth is an ally to Karthus, they gets a noticable increase in their total damage output. This may indicate that Karthus helps provide protection for them to dish out more damage or that his presence also helps extend the match's duration. Similarly, when Bel'Veth is played with Karthus on the same team, he usually scores many fewer killing sprees than when they plays without Karthus. This is contrasting evidence that they is worse when playing synergisticly with Karthus.
Moreover, when Bel'Veth plays with Karthus on the same team, they typically receives more damage than when they fights alone. Getting dealt more damage may indicate that Karthus does a poor job of covering Bel'Veth during teamfights.
There is no top champion pairing for Bel'Veth that will always be their #1 ally. However, overall, Karthus is a relatively poor teammate for Bel'Veth. By playing on the same side as Bel'Veth, he lowers their win rate by -3.0% to 48.2%. This demonstrates that there is a negative synergy between Bel'Veth and Karthus that allows them to perform not as well together than alone.
Karthus has a much lower diffuclty than Bel'Veth. That means you don't need to be careful when finding Karthus allies to go into battle on the same side as, as they will have to have a much lower level of skill to play well with you.
When playing on the same side, Bel'Veth players will likely see an overall large increase in your team’s capacity to deal magic damage. When paired, these champions can blast through enemies with magic damage.
In contrast, by pairing Bel'Veth and Karthus together, you will not be giving your other teammates a great deal of engage potential. Make sure to have other champs on your team that offsets this hole in this pairing's kit.
Regardless of your Karthus ally's skill level, you should focus on increasing your income, warding to avoid ambushes, and clearing objectives. If you heed this simple advice, you will do well anyway.
If you would like to learn all of the intricacies of Bel'Veth to work well with Karthus during both the laning and mid / late game phases of League of Legends rounds, you should keep reading to gather additional tricks and insights into this champion pairing. If you pay attention to the build and tips shown above, you should grow your win rate by a lot.
The most important finished items to prioritize in your Bel'Veth and Karthus synergy build include Wit's End, Blade of The Ruined King, and Kraken Slayer. When Bel'Veth bought at least these three items in their build, they performed much better when paired up with Karthus than with many other typical item sets. In fact, Bel'Veth had an average winrate of 48.2% helping carry Karthus with this build.
To have the highest probability of crushing your oponents, Bel'Veth players should equip the Conqueror, Triumph, Legend: Alacrity, Coup de Grace, Magical Footwear, and Cosmic Insight runes from the Precision and Inspiration rune sets. Out of all the rune combinations that we analyzed for this champion pairing, this mixture of runes resulted in the best win rate. Moreover, these runes gave a 48.2% winrate overall.
By default, tips, statistics, and builds on how to synergize Karthus with Bel'Veth are displayed for every ranked division. If you want to scope the statistics and builds to a distinct skill level, you can use the selection menu earlier on the page.