Codex Fejérváry-Mayer is a 15th or early 16th century Aztec (or Mixtec) manuscript on deer skin from Veracruz in central Mexico. Named for a Hungarian collector and British patron, this pre-Columbian accordion-style document outlines the cosmological and calendrical orientations of the Mayan people. As a typical calendar codex tonalamatl dealing with the sacred Aztec calendar -- the tonalpohualli -- it is grouped in the Codex Borgia group.
Tezcatlipoca: ‘The Smoking Mirror’. God of the night sky, ancestral memory, time and the Lord of the North, the embodiment of change through conflict. Together with his eternal opposite Quetzalcoatl, he created the world. In this process, he lost his foot when he used it as bait for the Earth Monster Cipactli. The Black Tezcatlipoca, he appears in the codices with a smoking mirror on his head, and in other instances, the mirror substitutes for one of his feet.