Make sure you choose the right augment at the right time.
Death Ray is a powerful poke and a strong area of denial tool. Use it in combination with Gravity Field to control your enemy's position.
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.
The Viktor Karthus synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Karthus, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Viktor sees a large worsening in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA worsened from NaN to NaN. This worsening shows that Karthus helps Viktor perform not as well in competitive League matches. Yet, the small difference proves that this performance change is not very impactful.
When Viktor plays on the same team as Karthus, he sees a little drop in his total damage dealt. This change could signal that Karthus does not provide cover for him to dish out more damage or that his participation also helps increase the round's duration. Similarly, when Viktor is played together with Karthus on the same team, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing synergisticly with Karthus.
Moreover, when Viktor plays with Karthus on the same team, he usually receives more damage than when he fights alone. Receiving more damage may indicate that Karthus does a poor job of protecting Viktor in team fights.
There is no universally accepted best synergy for Viktor that will 100% of the time be his best ally. However, Karthus is a below average ally for Viktor. By being on the same side as Viktor, he lowers their win rate by -2.6% to 47.6%. This proves that there is a bad bond between Viktor and Karthus that allows them to perform worse together than without each other.
Karthus has a lower difficulty than Viktor. That means Viktor players don't need to be very careful when arranging Karthus comrades to go into battle on the same side as, as they will have to have a relatively low level of skill to be able to fight well with you.
Playing together, Viktor players should observe an overall large increase in your team’s capacity to deal magical damage. Combined, these champions are able to dish out a surprising amount of magic type damage.
Conversely, by bringing Viktor and Karthus together, you probably will not be giving your other allies much AD. Plan to include other champions on your team that helps cover this gap in this pairing's abilities.
Regardless of the ability of your Karthus teammate, you need to focus on increasing your gold income, staying alive by avoiding foolish fights, and taking down objectives. If you heed this simple advice, you should do well anyway.
To truly master Viktor to work well with Karthus during both the early game and mid / late game phases of League of Legends, you should continue reading to gather additional tips and tricks for this champion pairing. If you listen to the build and tips shown here, you will grow your win rate by a lot.
The most important items to focus on in your Viktor and Karthus synergy build include Zhonya's Hourglass, Stormsurge, and Luden's Companion. When Viktor included at least these three pieces in his build, he did much better when paired up with Karthus than with most other common item sets. In fact, Viktor had an average win rate of 47.6% helping carry Karthus with these items in his kit.
To have the highest chance of coming out on top against your oponents, Viktor players should equip the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Manaflow Band, and Transcendence runes from the Inspiration and Sorcery rune sets. Of all the rune builds that we analyzed for this team composition, this combo of runes resulted in the top win rate. Moreover, these runes gave a 47.6% win rate overall.
If you need to see Viktor and Karthus collaboration tips and stats for a a particular skill level, please choose one from the selection menu provided above. By default, the stats and build suggestions displayed are calculated using every round played with both champs.