I have no idea what’s going to happen, but I’m pretty sure I’m 99.7% accurate.
Luke Skywalker prediction:
He won’t be seen until the Third Act when the dark side dudes are kicking ass. Luke will come out of exile to save his old friends and a few new ones. Realizing the Sith is back if full force (pardon the pun), the movie will end with Luke assuming the role of Jedi Master and heading up the newly rebuilt Jedi academy. He’ll remain good till the end.
Jon Snow will be “revived”, either directly by Lady Melisandre (she seems to take an unusal interest in him) or when his body is burned as part of the Night Watch’s ritual. I think there is a very high probablility that he is the son of Rhaegar Targaryen and Lyanna Stark, so he could be “reborn” by the fire, as he is a true dragon. Since the Targaryens like to keep it within the family, he’ll marry Daenerys Targaryen and they’ll reign together over Westeros and the Free Cities. He’ll be free to do so because he has technically been freed from his oath to the Night’s Watch by dying.
The dragon chooses the rider and only one person rides a dragon for life. If that person dies (and they usually do since dragons live for a while), the dragon won’t choose another rider.
The dragon having three heads is a prophecy and there are three dragons and there are seemingly three Targs left in the world. I highly doubt the other two will be the ones to ride the other two dragons…at least I’m pretty sure one of them is a “false pretender.” Though even he has Targ blood so it’s not out of the question.
That’s pretty much the biggest question left in the books. Who will be the three heads of the dragon (the three to ride the three dragons)?
Three heads doesn’t necessarily mean three riders, nor is the prophecy necessarily true. Faegon is surely the cloth/mummers dragon, but given that the big three are Jon, Dany, and Tyrion, with Jon the most important, it has to be them if the prophecy is right. A big “if”. Confusingly, it’s unlikely that Tyrion is a Targ.
The prevailing theory is the Mad King raped Joanna Lannister on her wedding night to Tywin. There’s some good circumstantial evidence to suggest this is true.