Although there's no actual in game footage in the trailer, it's a fun video showing the misery of a male Gnome not yet high enough level to play with his friends. Cue the level 90 boost and soon enough he's joining them, suited and booted. More than anything the trailer is designed to encourage players to pre-buy Warlords of Draenor to ensure they received the level 90 booster. Personally, if you play World of Warcraft anyway I think it's a great deal. Take a look below for the trailer.