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.
Chronobreak is a potent escape tool, but it can also be quite powerful when used offensively. Don't underestimate its damage potential.
If you can proc Z-Drive Resonance on an enemy champion, it's worth taking risks to do so. The bonus Move Speed makes it easy to escape.
Phase Dive's dash is a great tool for setting up Ekko's other abilities. Use it to get double hits with Timewinder or get into position to detonate Parallel Convergence.
The Karthus Ekko synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Ekko, 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 Ekko. His KDA decreased from NaN to NaN. This worsening shows that Ekko helps Karthus perform not as well in competitive League of Legends rounds. Yet, the small difference proves that this performance change is not very impactful.
When Karthus is an ally to Ekko, he observes a small decrease in his complete damage dealt. This could signal that Ekko does not support by providing protection for him to dish out more damage or that his presence on the team also helps increase the round's duration. Similarly, when Karthus is played alongside Ekko on the same side, he usually scores many fewer killing sprees than when he plays without Ekko. This is contrasting evidence that he is worse when playing with Ekko.
Moreover, when Karthus plays with Ekko on the same team, he on average receives a little less damage than when he plays alone. Getting dealt not as much damage could mean that Ekko does a decent job of protecting Karthus in team fights.
There is no perfect champion pairing for Karthus that will no matter what be his #1 synergy. Yet, overall, Ekko is a decent companion for Karthus. By locking into the same team as Karthus, he improves their win rate by 1.6% to 48.9%. This clearly indicates that there is a good strategic relationship between Karthus and Ekko that results in them performing at the top of their game together than without each other.
Ekko has a greater difficulty than Karthus. That means you need to be very careful when arranging Ekko teammates to go into battle on the same side as, as they will require a greater level of skill to be able to fight well with you.
Working on the same side, Karthus players will likely witness an overall large increase in your team’s capacity to to do a lot of AP damage. Combined, these champions can blast through enemies with magic damage.
In contrast, by aligning Karthus and Ekko together, you will not be giving your other teammates a lot of protection for burst damage. Plan to pick other champions on your team that nullifies this relative gap in their abilities.
Regardless of your Ekko ally's skill level, you should focus on increasing your gold income, staying alive by avoiding foolish fights, and clearing objectives. If you follow these simple suggestions, you should do well anyway.
To learn all of the intricacies of Karthus to pair well with Ekko during both the lane and mid / late game phases of League of Legends, you should keep reading to pick up additional lessons on this champion pairing. If you use the build and stats shown here, you will increase your win rate significantly.
The most crucial finished items to have in your Karthus and Ekko synergy build consist of Malignance, Stormsurge, and Liandry's Torment. When Karthus combined at least these three items in his build, he performed significantly better as an ally of Ekko than with most other commonly used item sets. In fact, Karthus had an average winrate of 48.9% helping carry Ekko with these items in his kit.
To have the greatest likelihood of crushing your oponents, Karthus players should take the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Gathering Storm, and Transcendence runes from the Domination and Sorcery rune sets. Of all the rune combinations players picked for Karthus and Ekko pairings, this set of runes resulted in the top win rate. Notably, these runes provided a 48.9% winrate overall.
By default, tips, statistics, and builds on how to pair Ekko with Karthus are given for all ranked divisions combined. If you want to narrow the statistics and builds to a particular player tier, you can use the selection menu earlier in the counter matchup guide.