Hrm, a bit more foreshadowing than usual this time.
First from Molly when she mentions that she'd like to see the unicorn turned into something mortal (to put it more bluntly) for a while. I wonder what she'd say at that point if she knew her wish was about to come to pass soon, or the effects it would have.
And then of course the talk of Haggard's castle, and the curse that it will sink into the sea with Haggard when his greed causes the sea to overflow. Well, curses and prophecies always will find a way, won't they? Well, in fantasy anyhow. Not so much in real life.