An Alternate Universe of a Charmed/Supernatural Crossover - Not all of God's Drafts are thrown away. Some of them are aware of what Chuck is doing. This is one of them.
Two sets of cousins, three siblings each, Prue, Piper and Phoebe Halliwell along with Dean, Sam, and Adam Winchester find out they are the most powerful witches in the world, The Charmed Ones. Follow them as they learn to control there powers and fight all sorts of evil in the first installment of the series.
The angels had decided the Halliwell family was too powerful to be left alive once it was decided to jumpstart the apocalypse, but they missed one. The elders had worked overtime to keep the only surviving charmed one alive and off the angel's radar. At least until an overzealous elder decided to take matters into his own hands to 'protect' the magical community.