

Cassiopeia vs Aatrox Counter Pick
Matchup Summary
What the Data Means
Cassiopeia carries the maximum difficulty rating of 10, and that execution cost usually shows up as inconsistent results — except against Aatrox, where 176 games on patch 16.13.1 give her a clean 57.9% win rate.
The mechanism is fairly direct. Cassiopeia’s Twin Fang deals increased damage to poisoned targets and heals her for a portion of the damage dealt, and she applies that poison from 550 range with Noxious Blast and Miasma well before Aatrox, stuck at 175 range, can close the distance. Aatrox’s own sustain, Deathbringer Stance, periodically empowers a basic attack with bonus magic damage and healing based on the target’s max health, but landing that attack requires getting in melee range against a champion built to poison and retreat.
Aatrox’s passive, Umbral Dash, heals him when damaging enemy champions and lets him dash on activation, which is his main tool for closing the range gap, but Cassiopeia’s Serpentine Grace makes every move speed bonus she has more effective, letting her kite just as well as he can dash. At level 18 Aatrox has considerably more health, 2,588 to Cassiopeia’s 2,296, so extended stand-and-fight scenarios still favor him if he ever gets there. Full kits: Cassiopeia, Aatrox.
FAQ
Yes — Cassiopeia holds the statistical advantage in this matchup. Cassiopeia wins 58.0% of the recorded games.
58.0% from Cassiopeia's perspective, measured on patch 16.13.1.
176 ranked games at Emerald rank and above, across all regions.
The current Cassiopeia build — items, runes and skill order from the same data set — is on the Cassiopeia build page.