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.
I buy first Mejai, later boots and later elixir of brillance for get easy zhonya ring. If i cant kill other champion i buy first magic penetration and HP because is more easy get kills.
My english sux but i think that these build is best for LeBlanc, i usually can kill easy with these champ and these rotation item.