HBO has posted a sneak peek Vine video for Game of Thrones Season 4 trailer #2, that will premier this Sunday. The video features a brief glimpse of Daenerys Targaryan, "Mother of Dragons," sitting on her new throne. https://twitter.com/GameOfThrones/status/434419381393960960 https://vine.co/v/M7rVhUhQDbi/embed/simple?audio=1 Game of Thrones Season 4 premiers on April 6th on HBO.