Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
first you buy 5 avarice blades and one berseker grave boot. the avarice blade gives you the ability to take every sec 5 gold when you get the money buy the first infinity edge. if you want after this you can take another one infinity edge or a phantom dancer everything you want then take another one phantom dancer after you buy all of this buy two blodthirsters and then you will see what is mean real overpower