This is my favourite episode so far. It's exciting, has a bit of humour and is also emotional. The focus is on Merlin and Colin acts so well as usual. I laughed at Merlin listening for woodworm. I love Kilgarrah's and Merlin's friendship. The newly-born dragon is adorable. He is the white dragon of legend. I liked the druids appearing and having a part to play.
I know this episode is not part of the story progression but I think the dragons are important later.