User blog:Noctosphere/How about bringing back Amy Pond's son?

After Deam killed Amy Pond in S07E03, he turns back and see Amy's son.

Dean ask him if he killed someone, and Amy's son answer that the only he will kill is him.

Dean reply by telling him to come back in a couple of year.

I would like to see an episode where Amy Pond's son comes back to take his revenge against Dean