so what's the trick when you are under level 15?

Have an enemy team so stupid they give you pentakill at level 1 and repeatedly do it again as they're up?

and where is your damage?

This.

Congratulations, you have three Phantom Dancers, and 0 damage items. You attack them REALLY fast for an exceptionally low amount of damage. You're built like paper mache, and die when sneezed on.

2x0 = 0

Allow me to put this in perspective:

If I have a feather, and I beat you mercilessly with it as fast as I possibly can, how do you think it will feel?

Now I put down the feather, and pick up a sledge hammer. I then proceed to beat you with that, albeit much slower. Which do you think hurt more?

why no early IE,BT,or GB?

It's true your DPS is a bit gimp, though on the other hand you have the summoner spell Ghost permanently active.

redenbacher's right man.. u dnt have damage output's.. even though ur really fast u can just be whipped in the toosh by your opponents.. besides.. 2 dancer's are enuf don't you think??

The damage output is the crits on this build. 90% crit ratio. Its not good to get by any means but stacking crits is nice but 2 would do you justice with a IE and you rock. Don't forget defensive items or armor pen either.

I played on my friend's new account and built an Ashe with 5 phantom dancers (sold IE, Bloodthirster, and boots), was planning to build 6 (just for fun, we were winning), and it is completely unviable for the above reason. Watching Ashe shoot like a machine gun at minions was pretty cool, but it still took several seconds to kill each minion because she was so weak. I had a hard time doing Golem at lvl 12+...

i only posted this because someone playing Yi did it 2 games in a row....by the end of the first game he had 5 and the 2nd he had 4. The first game I happened to notice sometime around 15-20 minute mark when I watch an attempted gank on him an took little to no damage. Ended up in the next game with him on the other side and he did the same thing, but I couldn't figure out where he could get that much gold in a short period of time.