"Offense Mastery Tree (2012)"@en . . "The Offense Mastery Tree is one of the three mastery branches. All masteries were redesigned on November 15, 2011. The information from this article refers to the version of this mastery tree used since the redesign."@en . . . . "The Offense Mastery Tree is one of the three mastery branches. All masteries were redesigned on November 15, 2011. The information from this article refers to the version of this mastery tree used since the redesign."@en . . . . . . .