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.
The whole idea behind this build is based on attacking so fast your lifesteal will keep you alive. It is very effective if u solo.
Start off with vampiric sceptor and lane till you have enough to get either the malady and boots of speed. You can engage squishes with a jump then hit your Q ability and maybe an ignite.
At level 6 when you get your ulti you become very good. Jump past your laning opponent then ulti him back to where you were, hit your q + e combo and you will have gotten a kill.
I will update soon