User blog comment:Fusedtwilight/Possible Season 11 Plots/@comment-112.134.1.195-20160410170736

This is my theory which based on the 18th episode od season 11. So as Castile and Winchester brothers expected, Lucifer finally met his aunt (Darkness) did use the Hand of God (Joshua's Horn) against her. But it proved to be useless. So now Lucifer is a useless figure to be speak of. As in final sceans, Dean and Sam sujest that Lucifer's light beam of God's power is harmless to Amara bacause he was a fallen angel with no passion for God.

Now as a one alternative, the chance goes to Michael or Gabriel. Winchester brothers need find either of them or both to confront Amara. Combined Archangel brothers and another power blast of whole angle batallion may defeat Amara.

But I hope the second alternative has the highest possibility to occur. Winchester brothers still need help of Castile, Crowly and Roweena as side kicks. But as their discussion, the power of the Hand of God will be effective only for a one with true passion and dedication. At the begining of season 11, Amara revealed that Dean is highly bonded with with her because he was the last known beared of the Mark. Lucifer gave it to Cain who passed it to Dean. Later Cain killed by Dean. So the sole inheritance of Mark is now with Dean. Becasue Dean is initially bonded with Amara, a blow given by him would be severe for Amara. So they will find a one last object of Hand of God with the guidance by Chuck (Appeared to be the God in the disguies of a Prophet, in the TV Series). With the help of Archangels, and other side kicks, Dean will use the power to devastate Amara to lock away or to be completly distroyed this time. Since Dean is mortal, he would die for the cause.

Season 11 will end with the death of Dean and Amara and in season 12, Sam will have to find a way to bring this brother back from the Death convincing to the Reaper Billie while Castile has his own with weakend Lucifer to be expelled form his vessel.

This is what I think as finale.