Prometheus sat on his haunches, giving Hades a look as he said, "Uh, I dunno. Hades brought you back to life somehow, and... I reincarnated with my memories as a dragon after dying too."

But this was good, right? Hythlodaeus was back! It didn't feel real, though, Prometheus too numb with shock to really react. It'll sink in later, no doubt.