sentences:  Several modern systems of runic magic and runic divination were published from the 1980s onward.The first book on runic divination, written by Ralph Blum in 1982, led to the development of sets of runes designed for use in several such systems of fortune telling, in which the runes are typically incised in clay, stone tiles, crystals, resin, glass, or polished stones, then either selected one-by-one from a closed bag or thrown down at random for reading.Later authors such as Diana L. Paxson and Freya Aswynn follow Blum (1989) in drawing a direct correlation between runic divination and tarot divination.