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.
Your most important function as a support is to keep fragile allies safe. Keep Devour's range and cooldown in mind and position accordingly!
Consider carefully when to use Thick Skin's active. Sometimes shielding early to avoid further damage is good, but sometimes the healing is more beneficial.
The Karthus Tahm Kench synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Tahm Kench, 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 Tahm Kench. His KDA decreased from NaN to NaN. This negative change shows that Tahm Kench helps Karthus perform not as well in competitive LoL rounds. Yet, the small difference indicates that this performance change is not very impactful.
When Karthus is an ally to Tahm Kench, he observes a small increase in his full damage dealt. This difference may signal that Tahm Kench helps provide protection for him to dish out more damage or that his allyship also helps increase the round's duration. Similarly, when Karthus is played alongside Tahm Kench on the same side, 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 synergisticly with Tahm Kench.
Additionally, when Karthus plays with Tahm Kench on the same team, he usually receives a little more damage than when he fights alone. Taking more damage may mean that Tahm Kench does a poor job of covering Karthus during teamfights.
There is no perfect synergy for Karthus that will 100% of the time be his ideal teammate. However, overall, Tahm Kench is a good ally for Karthus. By locking into the same side as Karthus, he improves their win rate by 2.2% to 49.5%. This shows that there is a good bond between Karthus and Tahm Kench that allows them to perform better together than without each other.
Tahm Kench has a lower difficulty than Karthus. That means you don't need to be very careful when finding Tahm Kench comrades to fight alongside, as they will require a lower level of skill to do well with you.
Fighting on the same side, you will likely witness an overall large increase in your team’s capability to deal magic damage. Combined, these champions are able to dish out a surprising amount of magic type damage.
Conversely, by grouping Karthus and Tahm Kench together, you will not be giving your other allies very much anti-tank damage dealing potential. Make sure to have other champs on your team that offsets this hole in this pairing's kit.
Regardless of your Tahm Kench ally's skill level, you need to focus on maximizing your 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 in order to synergize with Tahm Kench during both the laning and mid / late game phases of League matches, you should continue reading to learn additional tips and tricks for this champion pairing. If you pay attention to the build and suggestions displayed here, you will grow your win rate by a lot.
The most important finished items to have in your Karthus and Tahm Kench synergy build include Shadowflame, Stormsurge, and Liandry's Torment. When Karthus used at least these three items in his build, he did significantly better when fighting alongside Tahm Kench than with many other common builds. In fact, Karthus had an average winrate of 49.5% helping carry Tahm Kench with these items in his kit.
To have the greatest likelihood of annihilating your oponents, you should equip the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Gathering Storm, and Transcendence runes from the Domination and Sorcery rune sets. Out of all the rune sets that we analyzed for this champion pairing, this combination of runes yielded the best win rate. Moreover, these runes provided a 49.5% winrate overall.
By default, tips, statistics, and builds on how to pair Tahm Kench with Karthus are presented for all skill levels, merged. If you would like to filter the statistics and builds to a specific rank, you may use the selection menu located earlier on the page.