This Ashe build is pretty broken.
Well I have been experimenting with Ashe on an Alt account I am leveling up. And I was trying new builds. And I noticed this specific build I like to call "caster ashe". You basically run this high sustain/pokey build. With 40% cdr, massive healing procs from Taste of Blood and Ravenous hunter and items. I can legit hit W once and gain a 1/3 of my health back. With my W being up every few seconds. I can sustain faster than they can deal damage. The kite potential from Swift Boots, black cleaver and/if cloud drakes allow you to be very mobile. The W damage is consistent making a very ideal siege build along with decent wave clear. You should def try this build and see what you think. So far it is a lot of fun but also a very easy way to get wins with.
This is the items that are with the build. Items like GA/Maw or LDR/MR are situational depending on matchup.
and add a 
in there, because this item is op on anyone.