Gold gives to Henry a substance placed within amulet to be worn while asleep. This potion will help Henry be at peace during these nighttime episodes and help him control the journey within this frightening word between worlds. Notably, Gold gives this to Henry with no strings attached--"on the house," as he says.
Although Gold seems to be using magic (or is he?), he is using it to help calm a young boy's fears and let him control his journey through them. I wonder if there's anything in that pendant, however, other than Gold's assurances that the potion will work. Is it a placebo, allowing Henry, himself, to control the dream and his place in it? There is a nice parallel between Gold's actions and encouragement given by Ruby's mother (Annabelle Gish) to control her own fate when the moon changes her into a wolf. There is no magic here, only belief and calm self-assurance that power over fear lies in one's own understanding and self-confidence.
By using Gold's potion (or by Henry's belief that it's a magic potion), Henry is able to see Aurora, who's been having the same dream (which makes sense since she had also been through a sleeping spell). This may finally point the way for Emma, Snow and whomever else is trapped in Fairytale Land to come through to Storybrooke. Of course, there's still Cora and Hook to deal with, and we know they're going to be nothing but trouble if they, too come through whatever portal and into town.
I really liked this week's episode. It captured the tragedy of Red's life as a she-wolf, living in constant fear that her worst instincts would take over at the full moon. I also liked the parallel drawn between Ruby and Rumple, both of these are tragic figures, seeing themselves as monsters and inherently irreemable. Yet the love they are shown (epsecially by the redemptive character Belle) may in the end help them see themselves in a new and less harsh light, understanding their own humanity through the prism of another's love.