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, you don't always have to ride Weaver's Wall.
Try to throw enemies into Unraveled Earth using Seismic Shove.
Once you have Rylai's Crystal Scepter, casting Threaded Volley at enemies chasing you is a great way of making them regret everything.
The Karthus Taliyah synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Taliyah, 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 very large drop in his KDA (ratio of kills and assists to deaths) when paired with Taliyah. His KDA fell from NaN to NaN. This decrease shows that Taliyah helps Karthus perform worse in competitive League of Legends games. Yet, the small difference indicates that this performance change is not very impactful.
When Karthus tries to synergize with Taliyah, he observes a small decrease in his complete damage dealt. This difference could indicate that Taliyah doesn't help cover for him to deal more damage or that her support also helps increase the round's duration. Similarly, when Karthus is played alongside Taliyah on the same team, he usually scores many fewer killing sprees than when he plays without Taliyah. This is contrasting evidence that he is worse when playing alongside Taliyah.
Additionally, when Karthus plays with Taliyah on the same team, he typically takes a little less damage than when he plays alone. Receiving not as much damage may indicate that Taliyah does a decent job of covering Karthus during team fights.
There is no universally accepted best champion pairing for Karthus that will no matter what be his best synergy. Yet, Taliyah is a very typical companion for Karthus. By locking into the same team as Karthus, she decreases their win rate by -0.9% to 46.4%. This shows that there is only a small synergy between Karthus and Taliyah that results in them performing not as well together than alone.
Taliyah has a lower difficulty than Karthus. That means you don't need to be careful when arranging Taliyah allies to go into battle on the same side as, as they will require a relatively low level of skill to work well with you.
When playing alongside, Karthus players should witness an overall large increase in your team’s capacity to deal magical damage. Together, these two can blast through enemies with magic damage.
Although, by bringing Karthus and Taliyah together, you may not be providing your team much sustained damage output. Plan to pick other champions on your team that offsets this hole in their capabilities.
Regardless of your Taliyah ally's skill level, you need to focus on maximizing your gold income, outlasting your enemies, and clearing objectives. If you heed this simple advice, you should do well anyway.
If you would like to truly master Karthus in order to work well with Taliyah during both the early game and mid / late game phases of LoL matches, you should keep reading to master a few extra tricks and insights into this champion pairing. If you pay attention to the build and stats presented above, you will increase your win rate by a lot.
The ideal items to have in your Karthus and Taliyah synergy build include Rabadon's Deathcap, Malignance, and Liandry's Torment. When Karthus bought at least these three pieces in his build, he did much better as an ally of Taliyah than with many other typical item sets. In fact, Karthus had an average win rate of 46.4% helping carry Taliyah with this build.
To have the greatest probability of coming out on top against your oponents, Karthus players 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 combinations players picked for this champion pairing, this order of runes resulted in the highest win rate. Notably, these runes gave a 46.4% win rate overall.
By default, tips, stats, and builds on how to pair Taliyah with Karthus are presented for all skill levels, merged. If you want to scope the statistics and builds to a particular player tier, you should use the selection menu earlier in the counter matchup guide.