this build is for speed slashing massive crits every hit. and running faster then anyone on the map rofl
START: I get the crit gloves and two heal pots. lane with a semi-good ranged if you can to help keep champs back while you build bloodlust. Try and stay in the lane as long as possible by using bloodlust to heal(but try and not to heal until its max stacks) if its gonna run out then use it if you need health. When you eventually go back to heal and buy, buy your boots( I like ninja, but mercs are sick if you are facing a lot of stun or magic).
MID: Now you should be finishing laning and fighting as a team try and stay back from the team and spin into the fray and target the weakest champ. if your getting smashed pop rage and spin out. simple and easy. After a couple team fights or a little more farming start building your (twin phantoms). Those will help you farm like crazy and crit like a mad man.
END: By this time you should already have a good idea of how his ulti works and how to stay alive so work on getting your Infinity edge. The game should be at the point were there is a lot of team battle in ether yours or there base so if needed get the Banshee so you can stay in the fight longer.
P.S This is common knowledge but when chasing a fleeing opponent: spin mock strike strike spin mock repeat till dead. your (twin phantoms will help you catch even yi)