The Taric build for Support is Locket of the Iron Solari and Guardian. This LoL Taric guide for Support at Platinum+ on 13.24 includes runes, items, skill order, and counters.
Taric Counters
54.3%
(+0.3%)
48.6%
(+0.1%)
1.7%
0.3%
(-0.0%)
229
(-4)