The Sona build for Support is Shurelya's Battlesong and Summon Aery. This LoL Sona guide for Support at Platinum+ on 13.23 includes runes, items, skill order, and counters.
Sona Counters
Sonawinslane against...
Win Rate
Matchup Rate
Shaco
335 games
0.8%
Janna
1945 games
4.7%
Alistar
767 games
1.9%
Rakan
1782 games
4.3%
Milio
1200 games
2.9%
Taric
289 games
0.7%
Renata Glasc
1145 games
2.8%
Rell
678 games
1.6%
Soraka
1463 games
3.5%
Lulu
1628 games
3.9%
Nami
1764 games
Braum
376 games
0.9%
Leona
899 games
2.2%
Thresh
2386 games
5.8%
Sonaloseslane against...
Vel'Koz
475 games
1.1%
Xerath
1158 games
Senna
3015 games
7.3%
Zyra
1508 games
3.6%
Pyke
1223 games
3.0%
Lux
2265 games
5.5%
Brand
820 games
2.0%
Neeko
406 games
1.0%
Swain
654 games
Pantheon
346 games
Zilean
575 games
1.4%
Yuumi
934 games
2.3%
Karma
1162 games
Morgana
1342 games
3.2%
Blitzcrank
1275 games
3.1%
Ashe
846 games
Bard
1175 games
Seraphine
771 games
Nautilus
1754 games
4.2%
Maokai
331 games