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.
early game :
buy a sapphire crystal and 2 hp potions and go mid. auto attack minions and kill them (last hit) with ur lay waste. so basically get the most gold u can (dont rush in killing or else u will die.)
tear of the goddess
boots of speed
mid game :
continue farming and gank when its the right time. also dont forget to check the map from now and then to use ur ult on a champion who haves low hp.
late game :
try to avoid dying and use ur ult well and dont forget to use ur wall of pain (nothing much to say)
archangel staff x3