A claimed 'Avengers: Doomsday' trailer and Doctor Doom character details

A post bills a linked video as an exclusive 'Avengers: Doomsday' trailer. Separately, a Marvel updates account shares what it calls the first description of Victor Von Doom for the film, calling him Latveria's ruler and a master of magic and technology. The description adds, 'No one knows what he really hides behind his mask.'