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
Hel (being) chapter 49, High describes the events surrounding the death of the god Baldr. The goddess Frigg asks who among the Æsir will earn "all her love and favour" by riding to Hel, the location, to try to find Baldr, and offer Hel herself a ransom. The god Hermóðr volunteers and sets off upon the eight-legged horse Sleipnir to Hel. Hermóðr arrives in Hel's hall, finds his brother Baldr there, and stays the night. The next morning, Hermóðr begs Hel to allow Baldr to ride home with him, and tells her about the great weeping the Æsir have done upon Baldr's