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.
I had this whole ****ing thing wrote then I saw that I wasn't logged in so i pulled up a tab and logged in, clicked refresh and bye-bye every damn thing I wrote. So here you go this will work trust me I wouldn't take time if it didn't. It works because of the attack speed combined with the toxic shot. Thumb up if you like and comment please thank you I don't know if it will work for you but...it did for me.
You can get health potions and wards if needed which usually are. Also when you have 6 items sell your Doran's blade for Guinsoo's Rageblade.