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 designed to make Warwick move fast attack fast and get a ****load of lifesteal using ap and lifestealing items. The Yi build makes his alpha strike and wuju style put out more damage and makes him heal more on his meditate. I have found that these builds work for me so try it out and give me some feedback.