The Prince That Was Promised

Jon is stabbed to death by his brothers. In death, he finds out about his parentage, and a prophecy of waking dragons from stone comes alive, while another of a dragon has three heads also rears its head.

"Yes, Orys, that is true. I'm your father, Rhaegar Targaryen, and you are the promised prince. The one who will lead the living out of the darkness. The one who wakes dragons from stone amidst salt and smoke." His father said.