What does Helaena dream in episode 7? It seems likely she's in the Dragonpit, where Aegon (Tom Glynn-Carney) had his coronation. And the dragon she's riding? And although the dragon Helaena rides is dark like Drogon, it looks slightly more purple in its colouring. House of the Dragon Season 3 is now streaming on HBO Max, with new episodes premiering Sundays at 9 p.m.