MacroMind matchup data — real ranked games, not opinions
Karthus vs Sejuani
In Jungle, Karthus wins 53% against Sejuani across 115 observed ranked games. This is an observed win rate shown with its sample size, not a prediction or a guaranteed counter.
By 15 minutes the median game has Karthus ahead by 981 gold.
Does Karthus counter Sejuani?
The numbers call it close: 53% for Karthus over 115 games, inside the noise band. Pick the side you play better.
How to beat Sejuani as Karthus
The median first death in this lane comes at 6:09; the level 6 spike lands around 6:44. Respect the all-in window until your spike is online.