The Milio build for Support is Shurelya's Battlesong, Ardent Censer, and Moonstone Renewer. This LoL Milio guide for Support at Platinum+ on 14.3 includes runes, items, skill order, and counters.
Milio Counters
Miliowinslane against...
Win Rate
Matchup Rate
Alistar
1297 Matches
1.5%
Rell
1151 Matches
1.4%
Rakan
2409 Matches
2.8%
Renata Glasc
905 Matches
1.1%
Soraka
1564 Matches
1.8%
Shaco
815 Matches
1.0%
Lulu
2822 Matches
3.3%
Milioloseslane against...
Senna
4879 Matches
5.7%
Xerath
1540 Matches
Vel'Koz
746 Matches
0.9%
Brand
1643 Matches
1.9%
Zilean
936 Matches
Hwei
1258 Matches
Zyra
3638 Matches
4.3%
Swain
1088 Matches
1.3%
Pyke
3181 Matches
3.7%
Bard
Lux
3295 Matches
3.9%
Neeko
752 Matches
Karma
4875 Matches
Pantheon
970 Matches
Morgana
2158 Matches
2.5%
Yuumi
1818 Matches
2.1%
Ashe
2062 Matches
2.4%
Taric
500 Matches
0.6%
Leona
2344 Matches
Seraphine
1159 Matches
Nami
4148 Matches
4.9%
Nautilus
3344 Matches
Sona
1296 Matches
Maokai
6469 Matches
7.6%
Braum
1028 Matches
1.2%
Thresh
3548 Matches
4.2%
Janna
3816 Matches
4.5%
Blitzcrank
3411 Matches
4.0%