Ah I see what you are talking about, I made this build as a end game build not as a progression.

ok quite costy ****... 2pd's and most of all cleaver as 1st item. No boots... well tbh before you will get that cleaver... you will have 0/20 stats :P

Most of all no lifesteal? at all? srsly?

I'm going to have to disagree with black cleaver as your opening item. It's really not the itemization you're looking for on low level yi. You get much higher returns out of attack speed due to his wuju style. Also you would probably open with long sword to build into black cleaver, which is usually a very offensive start, but then you pour points into meditate, which is for a defensive playstyle... You're going to be OOM all the time, and all your points in wuju style aren't doing you much good when you have no attack speed items. Warmogs? really? get frozen mallet if you want hp.

And where are your boots? Don't be silly. phantom dancers and the occasional highlander and ghost don't give yi enough of his much needed movement speed.