Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This build does quite a bit of damage and will easily kill both tanks and squishies, as well as keep them constantly slowed, even if you run out of mana. Obviouly, there's items to build all those, but this is easier. I also didn't include consumables, because those vary depending on the games. After getting the phantom daner, you can sell your shield and/or philosopher's stone to gve room and the extr cash for the other two items. Hope this works for some of you. The runes are to increase early and late damage, especially when dealing with tanks, and as well as to keep your attack speed high and give you a constant use of your abilities. The masteries I chose I mainly utilities. These help with leveling faster, more cooldown reduction, quicker use of summoner's abilities, extra exp, and some mana and healh regain. For offence, I put crit chance, ability cooldown, and the magic penetration, which will help ashe's ult. Overall, quite a deaadly ashe that can also live a few hits because of the frozen mallet.