This is a semi-humorous build that I was inspired to make after seeing a Gangplank with 100% crit chance. I thought it might be fun to get 100% of Ashe since I didn't have my own stable build for her. 100% crit with lots of lifesteal. 601 movement apparently. With a hell lot of attack, just 2.5x it and there's your damage.

Yah about the ability power, since you're getting 100% crit chance anyway there really is no point in improving Deadliness. Alacrity is the one that you can take points from to put into anything you want. Maybe Burning Embers for ignite.

Great segway into summoner spells. Take flash because it's awesome. Then take exhaust if you're not putting anything into Burning Embers and if you are then your choice. Surprisingly, heal isn't a bad idea since you can actually turrent dive with it. Seriously.

The only thing I want to say about items is that if you want you could get a philosopher's stone in the beginning for more gold and it's mana regen can help you harass more with volley and frost shot. BTW NEVER USE VOLLEY TO FARM. HARASS WITH IT and get a few shots in.

Skills are pretty basic. Hawkshot you don't really need so just save it for last-ish.

Your Marks can be replaced with attack damage. Get the mana regen cuz of harassment again. and flat health, which you might want for most carries.

Yah this build has like no defense at all. Anyway I guess you can lane with someone who can shield you while you do the damage like every carry usually does. This is more of an idea than something really serious. It might be fun to see what happens XD.