Senna vs Karthus Counter Pick
Matchup Summary
What the Data Means
Karthus does not need to survive a fight to win it. Death Defied keeps him casting from a spirit form after death, and Requiem channels for three seconds before striking every enemy champion regardless of where they stand. Both mechanics ignore the spacing Senna’s kit is built to enforce.
- Attack range favours her at 600 to 450, but Lay Waste is cast at a location and Defile surrounds him, so he never walks into it.
- Wall of Pain lowers the movement speed and magic resistance of anything passing through, and she starts with 30 magic resistance.
- Health lines are one-sided: 620 to 2,490 for him, 530 to 2,043 for her, so trading burst is not a plan.
What Karthus lacks is movement. He has no dash, 335 base movement speed, and a 21 armor start that only reaches 100.9, which makes the early game the honest window for Senna to build Absolution stacks and push him off the wave with Piercing Darkness. His damage is pure magic against her mixed profile, and his 46 base attack damage is the lowest figure either side brings, so the early trade is genuinely hers to take if she keeps clear of the wall. Both are rated 7 for execution. Across 318 matches on patch 16.13.1 Senna takes 44.3%, graded Hard, a deficit produced by the pair of mechanics above rather than by any stat line.
FAQ
No — current data marks this as a counter matchup: Karthus has the statistical edge. Senna wins 44.3% of the recorded games.
44.3% from Senna's perspective, measured on patch 16.13.1.
318 ranked games at Emerald rank and above, across all regions.
The current Senna build — items, runes and skill order from the same data set — is on the Senna build page.