User blog comment:Rafe Adler/"Good Intentions" Discussion/@comment-1031724-20180309192514

At this point I'm not sure what's going to happen. With Sam, Dean, and Castiel looking for ingredients for the spell in their world, it's likely they'll be the ones to open the rift. As for the archangels on their side, they'll need either Lucifer's grace or Gabriel's.

Michael appears to be more powerful than Jack, at least now. Not sure whether Jack will kill him at the end of the season or whether he'll cross over to be the main villain of Season 14. At this point Michael already seems to be the villain of Season 13, alongside Asmodeus. Neither really appears much, but even Lucifer hasn't played as big an antagonistic role as them this season.

Bobby keeps up his tradition of continuing to appear in every season even after his death. Even though it's AU Bobby. (I wish we knew what happened to our Bobby, was he locked in Heaven's jail? I can imagine he'd be returned to his Heaven after Metatron got God to get back into the action and help stop Amara. If they don't specify, that's my headcanon)