The Golden Egg is a magical object that appears in the fourth book of the Harry Potter series, Harry Potter and the Goblet of Fire. It is one of the three tasks that the champions of the Triwizard Tournament must complete. The Golden Egg is a large, golden egg that is impervious to most forms of magic. It is guarded by a fire-breathing dragon, and it can only be opened by listening to the song that the dragon sings. A fanart Harry Potter Golden Egg Sticker.