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.
Keeper's Verdict can be released immediately to send the enemy straight up, take advantage of this in duels.
Iron Ambassador tends to land near walls, try to take advantage of this with Heroic Charge.
The Karthus Poppy synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Poppy, 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 Poppy. His KDA decreased from NaN to NaN. This fall shows that Poppy helps Karthus perform poorer in competitive League of Legends games. Yet, the small difference demonstrates that this performance change is only marginal.
When Karthus plays on the same team as Poppy, he gets a small increase in his total damage output. This could demonstrate that Poppy helps provide protection for him to dish out more damage or that her allyship also helps extend the game's duration. Similarly, when Karthus is played together with Poppy on the same team, he usually scores many fewer killing sprees compared to when he plays alone. This is contrasting evidence that he is worse when playing alongside Poppy.
Moreover, when Karthus plays with Poppy on the same team, he on average receives less damage than when he plays alone. Taking not as much damage could indicate that Poppy does a decent job of protecting Karthus in teamfights.
There is no one best ally for Karthus that will always be his best teammate. However, overall, Poppy is a good ally for Karthus. By playing on the same side as Karthus, she increases their win rate by 1.2% to 48.5%. This shows that there is a potentially meaningful synergy between Karthus and Poppy that allows them to perform at the top of their game together than without each other.
Poppy has a lower difficulty than Karthus. That means Karthus players don't need to be careful when enlisting Poppy allies to go into battle on the same side as, as they will need a relatively low level of skill to work well with you.
When playing alongside, you should see an overall large increase in your team’s capacity to deal magical damage. Together, these champs can blast through enemies with magic damage.
In contrast, by grouping Karthus and Poppy together, you will not be providing your team very much attack damage. Make sure to include other champs on your team that offsets this relative gap in this pairing's playstyle.
Regardless of the skill of your Poppy ally, you need to focus on maximizing your income, staying alive by avoiding foolish fights, and taking down objectives. If you follow these simple suggestions, you will do well anyway.
If you would like to learn all of the intricacies of Karthus in order to synergize with Poppy during both the laning and mid / late game phases of League rounds, you should continue reading to master a few extra tricks and insights into this champion pairing. If you use the build and tips presented above, you will increase your win rate significantly.
The ideal finished items to include in your Karthus and Poppy synergy build include Rabadon's Deathcap, Shadowflame, and Liandry's Torment. When Karthus combined at least these three items in his build, he did much better as an ally of Poppy than with most other commonly used item sets. In fact, Karthus had an average win rate of 48.5% helping carry Poppy with this build.
To have the greatest probability of crushing your oponents, you should take the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Of all the rune sets players used for this team composition, this combo of runes resulted in the best win rate. In fact, these runes averaged a 48.5% winrate overall.
By default, tips, stats, and builds on how to pair Poppy with Karthus are given for all skill levels, merged. To filter the stats and builds to a specific rank, you can use the selection menu located earlier on the page.