text: In Serbian tradition, these objects were sometimes buried with corpses to prevent a spirit from wandering out of its grave.
full_question: In Serbian tradition, these objects were sometimes buried with corpses to prevent a spirit from wandering out of its grave. After a god partly named for these objects turns into the sun, his rival knocks him from the sky using a stone club. One of these objects “of Eight Ta” is joined by a sword and a jewel in the Imperial Regalia of Japan. Tezcatlipoca’s right foot was depicted as one of these objects, which were usually made from obsidian in Mesoamerica. A “magic” one of these objects is asked “who is the fairest one of all” in the story of Snow White. For 10 points, name these reflective surfaces.
first_sentence: In Serbian tradition, these objects were sometimes buried with corpses to prevent a spirit from wandering out of its grave.