Norns
Norns are known of as a group of three that decide the fate of all humans. Their names are: Urd, spinner of the past, Verdandi, spinner of the present, and Skuld, the spinner of the future. From the well of Urd grows Yggdrasill. This tree is thought to be of ash that grows in the center of the universe holding the 9 worlds of Norse Cosmology together.
There are other norns as well, created each time a person is born to determine how their life will play out.