At the last moment, Dean instead kills Death with the scythe, who crumbles into dust. Crowley brings Oskar with Castiel and Rowena, who sadly kills Oskar to complete the spell. The spell causes a lightning bolt to finally erase the Mark of Cain from Dean's arm. Sam and Castiel stood by his side to catch Dean from exhaustion.

Dean:"is it gone....?"

Sam:"it's gone brother."

Castiel:"you okay?"

but black smoke emerged from nowhere and a woman with cloth out of the 1723 century appeared.

Crowley:"The darkness itself..."

the woman looks at Dean and the others in shock to be free.

Dean:"who are you-"

but before he could speak there is a pull like a string connecting him to that woman. Both feeling the pull and the small pain it causes when they aren't near.

Sam:"Dean!"

you watched in horror, you are scared yourself.

"We're bound, pick a name for me and i will find you if you are in danger...."

and with that you vanished.

Dean:"what the hell."