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.
Using Rupture on creeps in combination with Carnivore is a good way to gain Health and Mana.
If you're having difficulty feasting upon champions, try eating minions until you're larger.
Try to line up your attacks with Vorpal Spikes so that they kill minions and harass enemy champions at the same time.
The Karthus Cho'Gath synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Cho'Gath, 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 Cho'Gath. His KDA went down from NaN to NaN. This decrease shows that Cho'Gath helps Karthus perform worse in ranked League of Legends matches. Yet, the small difference indicates that this performance change is only marginal.
When Karthus is paired with Cho'Gath, he sees a little increase in his full damage dealt. This could indicate that Cho'Gath supports by providing cover for him to deal more damage or that his support also helps extend the match's duration. Similarly, when Karthus is played with Cho'Gath 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 Cho'Gath.
Moreover, when Karthus plays with Cho'Gath on the same team, he typically takes more damage than when he plays alone. Taking more damage could mean that Cho'Gath does a poor job of protecting Karthus during team fights.
There is no perfect champion pairing for Karthus that will 100% of the time be his top teammate. However, overall, Cho'Gath is a relatively poor teammate for Karthus. By being on the same team as Karthus, he drops their win rate by -2.1% to 45.2%. This proves that there is a bad synergy between Karthus and Cho'Gath that results in them performing worse together than alone.
Cho'Gath has a lower difficulty than Karthus. That means you don't need to be very careful when enlisting Cho'Gath comrades to fight alongside, as they will need a relatively low level of skill to do well with you.
Working on the same side, Karthus players will likely observe an overall large increase in your team’s ability to deal magic damage. Combined, these champions can blast through enemies with magic damage.
Although, by bringing Karthus and Cho'Gath together, you will not be providing your team enough anti-tank damage dealing potential. Make sure to include other champs on your team that helps cover this gap in their potential.
Regardless of the skill of your Cho'Gath teammate, you need to focus on maximizing your gold income, staying alive by avoiding foolish fights, and taking down objectives. If you follow these simple suggestions, you should do well, regardless.
If you would like to learn all of the intricacies of Karthus in order to work well with Cho'Gath during both the early game and mid / late game phases of LoL, you should keep reading to pick up some more tricks and insights into this champion pairing. If you pay attention to the build and tips presented here, you should grow your win rate by a lot.
The most important items to use in your Karthus and Cho'Gath synergy build include Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus incorporated at least these three items in his build, he performed much better as an ally of Cho'Gath than with many other commonly used builds. In fact, Karthus had an average win rate of 45.2% when playing alongside Cho'Gath with these items in his kit.
To have the greatest chance of beating your oponents, you should equip the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Eyeball Collection, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune sets players used for this team composition, this mixture of runes resulted in the best win rate. Moreover, these runes gave a 45.2% win rate overall.
By default, tips, stats, and builds on how to team up Cho'Gath with Karthus are presented for all skill levels combined. To filter the stats and builds to a specific division, you may use the selection menu above.