Firstly get a Doran's Blade. Second,get enough gold 2 get a Berzerker's Greaves but in the late part of the game you need 2 give him a Mercury Threads 4 Tecnacity. Third get a vampiric scepter. Sell the Doran's Blade then get a Phantom Dancer. Make a Blood Thirster and buy a Zeal. Buy a Giant's Belt n make a Phantom Dancer.Get a Infinity Edge then get a Frozen Mallet 4 a small amount of Ad n a huge amount of Hp and the passive 2 slow down the enemies which is good for movement speed champions like Master Yi.Buy the last item ,the Phantom Dancer and u will be fit 4 KSing,Aiding and carrying.(if there is no Teemo,Leona,Taric and sona on the opposing team.)

Hope u like it!XD(First time makin this.)