Karthus Counter Pick
The Best Karthus Counter Picks in League of Legends for patch 9.18, Ranked Boost recommends these picks due to their win condition and abilities.
Karthus is Weak Against
Statistically, these counter picks have a Higher Win Rate in patch 9.18. The strongest counter would be Katarina, a hard to play champion who currently has a Win Rate of 51.29% (Good) and Play Rate of 4.23% (High).
Most Popular Matchups
League of Legends most often picked champions vs Karthus, this is often heavily influenced by champion popularity.
Karthus is Strong Against
Statistically, these champion picks have a Lower Win Rate Versus.
You can find this champions most similar picks in league of legends based on role and playstyle here.