The Bard build for Support is Shurelya's Battlesong and Fleet Footwork. This LoL Bard guide for Support at Platinum+ on 13.24 includes runes, items, skill order, and counters.
Bard Counters
52.3%
(-0.3%)
52.8%
(-0.2%)
4.1%
(+0.7%)
0.5%
(0.0%)
385
(-10)