I think many of you remember Morganthe's prophecy in Celestia. "The mirror will break, the horn will call. From the shadows I strike, and the skies will fall." Now, if I remember correctly, "The mirror will break," is referencing the Mirror Lake in Zafaria, where I think she gets her Deck of Shadows. "The horn will call," is some kind of horn in Azteca owned by some boss who's name I forget. And, "and the skies will fall," is about the comet that 'falls' from the sky and 'destroys' Azteca. But what is, "from the shadows I strike,"? Is she referencing the world after Azteca?