Talk:Master Yi/@comment-211.30.109.78-20110827174432/@comment-3486816-20110828070740

problem with stacking PDs is a) you aren't getting IE to take advantage of the crit (if you did your damage would be much more godlike than with a second PD, even for the cost), and b) you're hitting the AS cap pretty quickly when you use your ult, and any gold spent on AS that exceeds the cap is wasted gold; I recall reading that with only 2 PDs you're already wasting gold.

You should always balance armpen, aspd, AD, and crit according to the champion. Yi gets a TON of AD and Aspd, so crit and armpen are particularly important on him, along with more movement speed (and preferably some form of CC, like a frozen mallet). To serve these purposes you can go IE, PD and an armor pen item, but I prefer to go IE and Ghostblade when I do play him. That's more a flavor choice than anything though.