So manamune is a recent thing you probably have seen many people build recently, It's good for lanes that are literally just going to be heavy farming lanes so that you can just spam poke with W and build it up with your autos... When it fully stacks (and if you have presence of mind) it gives 46 ad from the passive at level 18 making the item give a total of 81 AD and the passive takes 3 percent of your current mana and applies it to single spell hits or on hit attacks... so Ashe's Q will apply the passive of 3 percent of your current mana doing 6 percent bonus damage.. So lets say you are at max mana 2324 it will take 3 percent (69.72) and output 139.44 physical damage with your auto as an extra bonus, and then it will continue to drop because its consuming 3 percent of your current mana to deal twice the amount of damage. I hope that helped!

So since 2017, I changed my build from domination to a more scaling build because now games are lasting longer... The auto Q auto thing is no more because of her rework a long time ago.. Generally sorcery is good for scaling games but Inspiration will help with lane phase etc

ty!