

Vel’Koz vs Cassiopeia Counter Pick
Matchup Summary
What the Data Means
Cassiopeia has no dash and no blink, and her 550 attack range only just exceeds the 525 opposite her, so her damage pattern requires walking into poke range and staying there. Twin Fang pays out fully on poisoned targets and must be repeated at close quarters, while Serpentine Grace amplifies every movement speed bonus she buys — the kit’s own admission that closing distance is her problem. The record reads 61.9% from 105 games of patch 16.13.1 play, a narrow evidence base for a wide margin.
Against that approach, Tectonic Disruption knocks up and pushes close enemies away, Plasma Fission splits into two slowing bolts, and Void Rift detonates twice over the same ground. Each of the three places an Organic Deconstruction stack, and the third converts to true damage that ignores her 32 base magic resistance. Both champions deal magic damage and both pay Mana, so both build the same defensive stat and neither gains ground from it; that true damage is what breaks the symmetry. She carries more base health at 630 to 590, though her 18 base armor, 97.9 at level 18 and 2,296 final health all trail Vel’Koz‘s 22, 101.9 and 2,324, and he moves at 340 to her 335. She is rated 10 for difficulty, he 8, and Miasma grounding is her cleanest answer.
FAQ
Yes — Vel'Koz holds the statistical advantage in this matchup. Vel'Koz wins 61.9% of the recorded games.
61.9% from Vel'Koz's perspective, measured on patch 16.13.1.
105 ranked games at Emerald rank and above, across all regions.
The current Vel'Koz build — items, runes and skill order from the same data set — is on the Vel'Koz build page.