Rumplestiltskin was imprisoned in the mine where they got the diamonds for the fairy dust. I wonder if that is why his magic could be imprisoned there. I also wonder if there is some other source of the stuff since that no longer seemed to be a working mine.
We haven’t see fairy dust at work in any other episode, have we? Did the blue fairy use it before?
The fairy dust seemed to almost have a mind of its own. The bit that Nova spilled didn’t just float away. It had a trajectory.
Since magic is such a major part of the story here —- who has it, how you get it, whose is more powerful, what is the price of it, etc. —- it will be interesting to see where they take this.