

Swain vs Sona Counter Pick
Matchup Summary
What the Data Means
Two very different profiles meet in the Support lane: Swain the mage/support hybrid, Sona the support/mage hybrid. The sample behind this page is 351 games from patch 16.13.1, and Swain wins 42.5% of them. A deficit of 7.5 points is what earns Sona its counter flag in this matchup.
A missed Demonic Ascension from Swain hands Sona the window to land Aria of Perseverance. Demonic Ascension and Crescendo are the two buttons that end the exchange outright.
Shared damage type here — magic for Swain as well as Sona. Level-one bases: Swain 595 HP / 25 armour / 31 MR, Sona 550 / 26 / 30. Late-game bases read 2278 health / 105 armour for Swain and 2097 / 97 for Sona. Base attack damage is 58 against 49, so Swain wins the raw auto-attack exchange. There is a movement gap too: 330 for Swain, 325 for Sona.
With both sitting in ranged range (525 against 550), neither side gets a free poke pattern.
A 8/10 difficulty rating on Swain, against 4/10, means the sample includes plenty of players still learning it. Treat 351 games as the confidence attached to 42.5%.
FAQ
No — current data marks this as a counter matchup: Sona has the statistical edge. Swain wins 42.5% of the recorded games.
42.5% from Swain's perspective, measured on patch 16.13.1.
351 ranked games at Emerald rank and above, across all regions.
The current Swain build — items, runes and skill order from the same data set — is on the Swain build page.