Xayah vs Karthus Counter Pick

On paper, Xayah’s 525-unit range should let her manage the spacing against 450, but the results say otherwise. She holds a 41.9% win rate across 117 logged games on patch 16.13.1. That is a thin sample, and it carries a Hard rating.

Karthus gets little from his attack range. Lay Waste is a delayed blast aimed at a spot, and it hits harder against isolated targets, which is exactly where a marksman farming Feathers usually ends up. Wall of Pain slows movement and reduces magic resist for anyone who crosses it, while Defile creates a lasting damage aura around him rather than a single targeted cast. He is also a touch quicker on foot, 335 to 330.

Since his damage is all magic, stacking armor is a poor choice. At level 18 he reaches 96.4 armor, which does nothing against his kit, so Xayah’s 30 base magic resist is what matters. Her opening lies in his low base armor of 21. Land a Bladecaller root, then follow with Deadly Plumage for the attack speed and movement speed boost, and you have the quickest path to a kill. Two mechanics change how the fight resolves. Death Defied lets him continue casting after he dies, and Requiem hits every enemy champion after a three-second channel, so a kill on him does not automatically stop the damage. Champion profiles: Xayah and Karthus.