White horse (mythology) Poseidon was also the creator of horses, creating them out of the breaking waves when challenged to make a beautiful land animal. In Norse mythology, Odin's eight-legged horse Sleipnir, "the best horse among gods and men", is described as grey. Sleipnir is also the ancestor of another grey horse, Grani, who is owned by the hero Sigurd. In Slavic mythology, the war and fertility deity Svantovit owned an oracular white horse; the historian Saxo Grammaticus, in descriptions similar to those of Tacitus centuries before, says the priests divined the future by leading the white stallion between a series of fences
Old Norse religion and dying in order to secure knowledge of the runes and other wisdom in what resembles an initiatory rite, is evidence of mysticism in Old Norse religion. The gods were associated with two distinct forms of magic. In "Hávamál" and elsewhere, Odin is particularly associated with the runes and with galdr. Charms, often associated with the runes, were a central part of the treatment of disease in both humans and livestock in Old Norse society. In contrast seiðr and the related spæ, which could involve both magic and divination, were practised mostly by women, known as vǫlur and spæ-wives, often