The Ashe build for ADC is Trinity Force and Lethal Tempo. This LoL Ashe guide for ADC at Platinum+ on 13.19 includes runes, items, skill order, and counters.
52.7%
(-0.1%)
46.9%
(-0.0%)
14.2%
(-0.3%)
10.3%
(-0.6%)
678
(+3)