

Rammus vs Sejuani Counter Pick
Matchup Summary
What the Data Means
Tank against tank rarely produces a fast kill, so the outcome is decided by who keeps working while neither dies. Rammus comes out behind at 47.3% over 146 games on patch 16.13.1, graded Hard.
Fury of the North grants Sejuani Frost Armor after time out of combat, and that buff includes immunity to slows. Powerball’s impact slow and Soaring Slam’s slow are two of the three things Rammus does to an enemy; the third, Frenzying Taunt, is a single-target lock she can walk away from afterwards at 340 move speed against his 335. She also finishes at 126.7 armor on level 18 to his 111.5, so his mixed damage meets a thicker wall than his own.
Control tools settle the rest. Arctic Assault knocks enemies into the air, Winter’s Wrath slows and applies Frost stacks, Permafrost stuns anything holding maximum stacks, and Glacial Prison stuns the first champion hit while slowing the rest. That is four separate effects against one taunt. Rammus can still peel with Soaring Slam and his 2,345 health at level 18 is not far off her 2,568, but the fight is decided by whose team fights better while both frontlines are alive. Sejuani is rated 4 on the difficulty scale to his 5, and neither number explains the Hard grade. Compare directly on Sejuani.
FAQ
No — current data marks this as a counter matchup: Sejuani has the statistical edge. Rammus wins 47.3% of the recorded games.
47.3% from Rammus's perspective, measured on patch 16.13.1.
146 ranked games at Emerald rank and above, across all regions.
The current Rammus build — items, runes and skill order from the same data set — is on the Rammus build page.