cas+sam
Raphael wanted to restart the Apocalypse, and he had his followers. I rebelled, the angels went to war with each other. You two were busy with whatever you were doing and pulling me away from important things. I betrayed both of you and made a deal with the King of Hell in order to gain access to Purgatory to take the power of the souls inside. I used the power to kill Raphael and declare myself God. When I accepted the souls from Purgatory I also took on ancient creatures called Leviathans and unleashed them on the world. Then I died. I was resurrected with no memory, your brother found me, you had been driven mad by your time in the Cage (you were in the Cage) and I took your madness upon myself. Though insane, I reluctantly assisted you in defeating the Leviathans. Then I died again. Dean and I spent time in Purgatory. There was a tablet that had a spell to close the gates of Hell. You began performing the trials that would allow this to happen. There was also a tablet that could close the gates of Heaven. We sought the Scribe of God (Metatron, read your Bible), he manipulated me into finding components for a spell that would expel all of the angels to earth. Part of that spell was taking my grace.