this build is mainly for soloing Vayne but can lane with 2 people as well...

You can also use other summoner spells and change your masteries how you like this is just how i get the most out of my build...

Order does matter but if youd rather get attack speed and armor pen go for black cleaver earlier on otherwise this will keep your damage output and survivability quite strong throughout the game as long as you pick up a few kills and assists..