The Fateweaver is one of the three deities that comprise the drow pantheon. She is the goddess of divination, knowledge, love, and creativity.
The Fateweaver is not a singular entity, but rather a title shared among the sacred spiders. Barring any extenuating circumstances, the Fateweaver remains in her role for two to three thousand years before passing on her role to another sacred spider believed worthy of it — usually, but not always, her daughter.