This build is so strong once achived that it is nearly impossibul if some engages with you for them to get away. With ashs ability to slow the enemy cant run and most players once you start atticking will panic as you constintly hit criticals dealing massive amounts of damage and with your att speed high the enemys health just falls.

The runes i picked are armor penitration just to give you that edge on tanks.
Then crit damage just to do that bit more damage when atting enemys seen as at end of build your crit chance is 110%

With Ash you need to start farming straight away lasting hitting minions is a must for this build as you need the gold.The ability volly will help alot with this and so will hawk shot as gives you extra gold per kill. You will be able to get kills while farming after about 15mins work more on killing with your ult you should be able rack up kills giving you massive amounts of gold.

I use exhaust just in case a assasin trys to get you and gets the gank you can use this to save you it has done me many a time.

Then clarity i use due to volly and frost shot drains your mana so i use this to able you to farm and lane for longer.

You could use flash due to any other champ having it could escape you so you use it to catch back up.

Also you could use heal just if your a new user so it can save you if things get abit sticky

This guide when used will have a massive result i got a 38-5-9 on a 5v5 match with this guide i was always targeted first as was most powerful and if i caught anyone alone or evan in a pair i could deal out massive damage in such a short time it makes players panic so you can rack up easy kills.

Ash is a carry so really you want to lane with a tank to protect you at the start of the game till you have farmed your gold and have your items to destroy the other team i like laneing with shen due to him having good abilitys and being able to make atts heal and being able to taunt enemy champs