Impale is extremely powerful when you use it to position an enemy so your allies can attack them.
Basic attacks reduce the cooldown of Crystal Slash. Use them as often as possible for maximum damage.
Capturing Crystal Spires before attempting neutral objectives or team fights around them improves Skarner's performance in said fights dramatically.
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 Skarner 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, Skarner sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA went down from NaN to NaN. This negative change shows that Karthus helps Skarner perform worse in competitive League of Legends matches. Yet, the small difference indicates that this performance change is not very impactful.
When Skarner plays on the same team as Karthus, he gets a barely noticable drop in his complete damage output. This change may indicate that Karthus does not support by providing cover for him to dish out more damage or that his participation also helps extend the game's duration. Similarly, when Skarner is played together with Karthus on the same side, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing with Karthus.
Moreover, when Skarner plays with Karthus on the same team, he typically receives less damage than when he plays alone. Taking not as much damage could indicate that Karthus does a decent job of protecting Skarner during teamfights.
There is no one best ally for Skarner that will no matter what be his best synergy. Yet, Karthus is a relatively poor ally for Skarner. By playing on the same team as Skarner, he decreases their win rate by -1.1% to 47.2%. This clearly indicates that there is a bad bond between Skarner and Karthus that allows them to perform not as well together than without each other.
Karthus has a greater difficulty than Skarner. That means you should be cautious when enlisting Karthus allies to fight alongside, as they will need a greater level of skill to be able to do well with you.
Playing alongside, you should see an overall large increase in your team’s ability to to do a lot of AP damage. Combined, these champs can blast through enemies with magic damage.
In contrast, by aligning Skarner and Karthus together, you may not be giving your other teammates a lot of protection for burst damage. Plan to bring other champions on your team that helps cover this hole in their capabilities.
Regardless of the ability of your Karthus ally, you need to focus on increasing your gold income, outlasting your enemies, and taking down objectives. If you follow these simple suggestions, you will do well, regardless.
If you would like to learn all of the intricacies of Skarner to pair well with Karthus during both the early game and mid / late game phases of LoL rounds, you should keep reading to gather additional lessons on this champion pairing. If you mind the build and stats displayed above, you should grow your win rate significantly.
The best finished items to focus on in your Skarner and Karthus synergy build consist of Trinity Force, Dead Man's Plate, and Jak'Sho, The Protean. When Skarner used at least these three finished items in his build, he did a lot better when fighting alongside Karthus than with many other common item sets. In fact, Skarner had an average winrate of 47.2% helping carry Karthus with this build.
To have the highest probability of annihilating your oponents, Skarner players should use the Phase Rush, Nimbus Cloak, Celerity, Waterwalking, Magical Footwear, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Out of all the rune builds players chose for this champion pairing, this mix of runes resulted in the top win rate. Moreover, these runes provided a 47.2% win rate overall.
By default, tips, stats, and builds on how to synergize Karthus with Skarner are given for every ranked division. If you want to scope the stats and builds to a particular division, you may use the selection menu located earlier on the page.