Runes are the ancient alphabet of the Norse. They are one of the ways to practice the art of divination. Runes are most often carved into stones, but other materials such as bones, wood or shells have also been used. There are 24 runes, but some include a blank rune, the Rune of Odin. There is an apparent link between the power of the mind, as well as other magical properties, which are represented by the symbology contained within each symbolic letter.