Before Lucifer returned from the other world he discovered three artifacts: the first is a Ruined Book of Omniversal spells with 5 spells that would allow Lucifer to bring over everything from his multiverse to another Omniverse. The Second Artifact would merge each Heaven, Hell, and Purgatory into one Dimension with the Creators becoming the Dimension. To see the full summary read

What if when Jack pleaded with his father Lucifer listened? Now in another world, Lucifer loses his vessel becoming pure grace as he goes through the portal his remaining grace and Jack combine. Lucifer must now deal with Gods, more powerful than Chuck. All the while they try to take his power and he deals with being reborn in a Human's body making him take time to regain his power

At the end of Season 14 Chuck (GOD) sends Sam & Dean to Westeros along with all the monsters they have defeated. Will Monsters overrun Westeros even before the Long Night begins. Can the Wayward Brothers survive this Nightmarish Land.

"Angels don't exist." Arya snaps, pointing Needle at him. "Neither do alchemists, I suppose." Balthazar replies and looks at the Lorathi over her shoulder. Jaqen blinks, and then laughs. Balthazar's awesomeness plus Jaqen/Arya.