I've noticed most builds on Moba are incorrect... for example i don't know why you would ever want to build Life steal on Voli when he doesn't deal enough damage for it to be worth it. The only good this about a BOTRK would be the active and really i don't see it being enough to really be worth building when you could just be really fast and or have a frozen mallet. And always keep in the back of your mind to farm the jungle hard to get your feral flare as soon as possible, but don't ignore the lanes. Voli ganks really hard if done properly. Also, if someone ivades your jungle by themselves Voli can generally take them on because he is one of the strongest 1v1 champs in the game, especially early and late game.