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.
This build is for game that get to 50 minutes or more, unless you're fed :D
I didn't fill the Runes because I really have no idea what to put there, I just bought the best Attack Damage, Mana, Attack Speed and Health Runes... Lol...
If the game gets to 40 Minutes, you can just mix up the order of Items by what stuff you need at the moment and what stuff can be saved for later.
Have fun with this!