This build is a good ad build, it allows you to do really well early game and get a few kills with your laning partner, which allows you to get your early phantom dancer and boots, this gives you massive movment speed, which allows you do lots of ganking, then you will really start getting lots of kills, by the end of the game, you will be able to solo anyonew on there team and take on multiplue people if you get enough kills

Start with a dorans blade and a health pot, then build a zeal, then either bezerker grieves or boots of mobility, boots of mobility if you are going to be doing more ganking, or if you are on summoners rift, it allows you to move around faster while cloaked, bezerker grieves for extra attack speed. then finish the phantom dancer, then get a sword of the divine, this gives lots of attack speed and also has a good passive and active. next get a bloodthirster, this is your core damage item, and also gives good life steal and the stacks are really good too. and last you get a madredblood razor, you can get this earlier if you see if nessicary.