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.
Each of Aphelios' weapons have different strengths, so try to find the right situation for your current weapons.
The Karthus Aphelios synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Aphelios, 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 Aphelios. His KDA went down from NaN to NaN. This worsening shows that Aphelios helps Karthus perform worse in competitive League games. Yet, the small difference proves that this performance change is only marginal.
When Karthus is paired with Aphelios, he gets a small decrease in his full damage output. This change could indicate that Aphelios does not provide cover for him to deal more damage or that his participation also helps increase the round's duration. Similarly, when Karthus is played together with Aphelios on the same team, he usually scores many fewer killing sprees compared to when he plays without Aphelios. This is contrasting evidence that he is worse when playing with Aphelios.
Additionally, when Karthus plays with Aphelios on the same team, he on average takes a little more damage than when he fights alone. Receiving more damage may mean that Aphelios does a poor job of protecting Karthus during team fights.
There is no perfect companion for Karthus that will 100% of the time be his #1 ally. However, Aphelios is a very typical ally for Karthus. By locking into the same side as Karthus, he drops their win rate by -0.3% to 47.0%. This clearly indicates that there is only a small synergy between Karthus and Aphelios that allows them to perform worse together than alone.
Aphelios has a greater difficulty than Karthus. That means you must be very careful when arranging Aphelios comrades to go into battle on the same side as, as they will require a greater level of skill to be able to do well with you.
Working cooperatively, Karthus players will likely see an overall large increase in your team’s capacity to deal magic damage. Combined, these two are able to dish out a surprising amount of magic type damage.
Although, by grouping Karthus and Aphelios together, you may not be giving your other allies much tankyness. We recommend you include other champs on your team that offsets this disparity in this pairing's playstyle.
Regardless of your Aphelios ally's ability, you need to focus on maximizing your gold income, outlasting your enemies, and clearing objectives. If you follow these simple suggestions, you should do well, regardless.
If you would like to truly master Karthus in order to pair well with Aphelios during both the early game and mid / late game phases of League games, you should keep reading to gather a few extra lessons on this champion pairing. If you mind the build and stats presented above, you will increase your win rate significantly.
The most crucial finished items to focus on in your Karthus and Aphelios synergy build include Malignance, Shadowflame, and Stormsurge. When Karthus included at least these three pieces in his build, he performed much better when fighting alongside Aphelios than with most other typical builds. In fact, Karthus had an average win rate of 47.0% helping carry Aphelios with these items in his kit.
To have the best likelihood of defeating 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 combinations players used for this team composition, this order of runes yielded the best win rate. Moreover, these runes gave a 47.0% win rate overall.
By default, tips, stats, and builds on how to pair Aphelios with Karthus are given for all skill levels, merged. To scope the statistics and builds to a particular division, you should use the selection menu above.