Anoregon
The flight plan I just filed with the agency list me, my men, Dr. Pavel here. But only one of you!
That's what everyone is hoping for. But isn't the most realistic expectation that Jon simply bit up farther than he could chew and was punished for it paying the ultimate price. Look I want Jon to not be dead but there are so many uncertainties to him being resurrected. Mel being strong enough, she's never done this before has she....or did she in the show, I know Thoros resurrected Beric in the books?
She hasn't in the book, but it stands to reason if Thoros can (who was basically characterized as a wild drunk maniac), then an incredibly devout priestess capable of making shadow demons can probably pull it off.