Also something to fuel the Jon is AA fire. Here is his dream:
Burning shafts hissed upward, trailing tongues of fire. Scarecrow brothers tumbled down, black cloaks ablaze. "Snow," an eagle cried, as foemen scuttled up the ice like spiders. Jon was armored in black ice, but his blade burned red in his fist. As the dead men reached the top of the Wall he sent them down to die again. He slew a greybeard and a beardless boy, a giant, a gaunt man with filed teeth, a girl with thick red hair. Too late he recognized Ygritte. She was gone as quick as she’d appeared.
Foreshadowing? I think maybe so.
Also, something that I've thought about. But why was Bowen Marsh crying when he stabbed Jon? He didn't have any real emotional attachment to him. And if you think about, there were comments about smoke rising from the blades that stabbed him and tears are technically salt water. Then you have Ser Patrek being torn to shreds over top of him, fulfilling the "Under a bleeding star.." portion to a degree.