Heyo fellow summoners now I know what you might be thinking, who would do this build so troll manamune??? No, this build is very good if used correctly with manamune's mana refundin.

Hey I am IntingDownMid and this is my Yi mid-lane. This build is solely based off of some lifesteal and mostly critical and attack speed items. With this builds power you will be able to delete any squishy in the game if you can get ahead by killing enemies solo or getting a good gank from your jungler.