Arguably the hardest 1v1 carry in the game, give Faceless Void infinite farm and nothing can stop him. With a Battlefury you can farm incredibly fast throughout the game and have some pretty good regen that is honestly better than the Mask of Madness build. Note this guide is the standard Void build; it will have to adapt to situations, for example getting Manta/BKB to deal with silencers.