'Supernatural' season 12 spoilers: Castiel gets full power back; Mary can't remember a thing

Fantasy horror television series "Supernatural" will be gracing the small screen again soon for its season 12. But while waiting, fans can check out spoilers to get to know some of the events that will be happening in the upcoming new season.
According to reports, "Supernatural" season 12 will have Castiel (Misha Collins) getting his full power back. For some time, Castiel has been powerless because the writers thought that he shouldn't be way too powerful. They didn't want him to overpower Sam (Jared Padalecki) and Dean (Jensen Ackles) and solve everything for them.
But now that Castiel is on the mission to hunt down Lucifer, he will need his powers back and spoilers suggest that it's the very thing that he will get in the new season. It's even said that his powers will be fully charged once he gets it that a time travelling event could happen.
Meanwhile, Castiel's power isn't the only thing that is coming back. The mother of Dean and Sam will be raised from the dead. As detailed in a spoiler, Mary (Samantha Smith) will come back to life after being dead for 30 years. She was resurrected by Amara (Emily Swallow) because she wanted to give it as a gift for Dean who helped her reconcile with her brother.
Amara though that his mother's life will be a great way to say thank you. However, it seems like Mary's resurrection is only going to end up as a liability as she could not remember anything at all. A hazy memory is going to be a problem for Dean and it's not helping at all considering he already has a lot on his plate.
He has to worry about Sam who has been captured by the British Men of Letters. Lady Toni (Elizabeth Blackmore) shot Sam in the previous episode due to the illustrious group's control. Dean will have to take action to save his brother.
"Supernatural" season 12 will premiere on Oct. 13 on The CW