Wyrd - a Norse / Anglo Saxon word. It is the concept of how everything is connected by a weave of intricate strands: the past with the future, actions and reactions, choice and destiny, etc. Wyrd is controlled by three sisters who are responsible for shaping our lives.
In Norse mythology, the great god Odin rode an eight-legged white horse named Sleipnir, a supernatural beast capable of leaping great distances. At the height of Yuletide—on the day after the winter solstice—Odin led a great hunting party across the sky in celebration of the return of the sun.