Both transfigure a region in whose joyful chords dissonance as well as the terrible image of world fade delightfully away.
Harry can summon his Firebolt when he battles the Hungarian Horntail, but he can't transfigure a rock into a flying broom (as Cedric transfigured a rock into a dog).
The self of the self within knows it is in for a disaster and attempts to transfigure the dream into a new accolade of something.
