Now who are these five?
Come, come, all children who love fairy tales.
When the rules talk about having a certain number of cards in the scoring pile in order to win, are the 4 Dream Cards from Ren's FINAL ROUND poem included (assuming they were relived)?
If so, tough, but not impossible. If NOT...then you'd REALLY need to play perfect, THEN get lucky in order to win after opening envelope 2....
Of course the final dream is scored as usual. Also, killing Ravens during the last dream can score you a lot of points.