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.
Riven lacks a source of healing or strong defense and must compensate with burst combos. Lead into fights with Broken Wings and Ki Burst, while using Valor to escape and absorb counter-harass.
Riven's Broken Wings locks onto the champion your cursor is over at the time of cast. If you want to move past your opponent, make sure that your cursor is past your opponent as well.
The Karthus Riven synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Riven, 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 Riven. His KDA fell from NaN to NaN. This worsening shows that Riven helps Karthus perform worse in ranked League matches. Yet, the small difference shows that this performance change is only marginal.
When Karthus is paired with Riven, he observes a small decrease in his full damage output. This difference may indicate that Riven does not help protection for him to deal more damage or that her allyship also helps increase the round's duration. Similarly, when Karthus is played with Riven on the same side, he usually scores many fewer killing sprees compared to when he plays without Riven. This is contrasting evidence that he is worse when playing alongside Riven.
Additionally, when Karthus plays with Riven on the same team, he on average receives a little less damage than when he plays alone. Receiving not as much damage may mean that Riven does a decent job of protecting Karthus during teamfights.
There is no perfect ally for Karthus that will no matter what be his #1 teammate. Yet, overall, Riven is a below average teammate for Karthus. By being on the same side as Karthus, she decreases their win rate by -1.1% to 46.2%. This proves that there is a negative strategic relationship between Karthus and Riven that results in them performing not as well together than without each other.
Riven has a greater difficulty than Karthus. That means Karthus players must be careful when arranging Riven teammates to go into battle on the same side as, as they will require a greater level of skill to cooperate well with you.
When playing alongside, you will likely observe an overall large increase in your team’s capability to to do a lot of AP damage. Together, these two can blast through enemies with magic damage.
In contrast, by bringing Karthus and Riven together, you may not be providing your team enough engage potential. We recommend you include other champs on your team that nullifies this disparity in their capabilities.
Regardless of your Riven ally's ability, you need to focus on maximizing your gold income, staying alive by avoiding foolish fights, and clearing objectives. If you do this, you will do well anyway.
If you would like to truly master Karthus in order to work well with Riven during both the early game and mid / late game phases of League matches, you should continue reading to pick up additional lessons on this champion pairing. If you mind the build and stats presented here, you will grow your win rate significantly.
The best items to get in your Karthus and Riven synergy build include Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus combined at least these three pieces in his build, he did much better as an ally of Riven than with most other common builds. In fact, Karthus had an average win rate of 46.2% helping carry Riven with this build.
To have the best likelihood of crushing your oponents, Karthus players should equip 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 runes players chose for Karthus and Riven pairings, this sequence of runes yielded the greatest win rate. Notably, these runes gave a 46.2% win rate overall.
If you want to get Karthus with Riven collaboration tips and builds for a an individual division rank, feel free to select one from the selection menu provided above. If viewing for the first time, the statistics and strategies given are computed using all matches completed with these champions.