Supernatural powers of being Charmed(Supernatural Charmed crossover)

Welcome

While the three witches from charmed are trying to hunt down the ultimate source of evil they realise that the source has disappeared after preforming a finding ritual the witches find out that the source has left their universe to go to the main universe because that main universe is like a peice of tape it sticks but disrupted it would unstick so they traveled to the universe.While the main universe is the supernatural verse which is Sam and Dean universe them and Castiel are hunting for lucifer to put him back in the cage so they find lucifer in San Fransisco.So they travel there as they are driving a bright light flashes in the road little to know it was the witches from charm.Sam and Dean stop and see the three women and the women about ro attack them so Sam and Dean take out their guns and start shooting but is deflected by the witches as they are about to attack them again Castiel appear and stop them with his mind and puts the witches power on lock down.Castiel explains that they are from another universe and says that they are here to destroy the ultimate sorce of evil.So Sam and Dean helps them but they needed their help to find lucifer but little to what they know that ultimate force made a deal with lucifer and the two combine their powers.But as the gang arrive its too late and the ultimate power and lucifer was one.So the witches powered up while Sam and Dean began to preform spells to restrain the mewly born evil source of power.The witches attack and was able to hold them back for a while but as Sam and Dean finish the spell they are thrown everywhere and the witches due to lucifer new power so Castiel appear and began to fight but was only a destraction so the other angels can trap lucifer and the source of evil in a cage between universes the plan works but before they go the evil reads Dean mind.Now in the cage the source and lucifer are laughing for some reason unknown and begin to start plotting.
(The biggest twist is coming in the next part)