This was pretty cool. I like werewolves and I like Ruby, so it almost couldn't lose. The one downside was that it was so painfully obvious that Spencer killed Mickey, or whoever that mouse was. There was some nice symmetry with Charming giving pep talks to Ruby throughout the story and then her returning the favor at the end.
It looks like the dreams will be the way back for Snow and Emma (no doubt with Aurora along). They'll probably be able to coordinate the use of the cabinet on one side and the fairy dust on the other. But I wonder what's causing these dreams.