Quote:
Originally Posted by
Con_Stripes 
"The 'glass to sand' shield, isn't specifically for that purpose, that is, it doesn't only work on changing glass into sand. Rather it is a shield which is used to revert physical things to a former state, whether they are transfigured or not. It has its limitations but as with any spell, in the right situation it is invaluable. Keeping in mind that it changes things back to a former state, what transfiguration spell might be its root?"
Marie thought back to last term and the transfiguration class they had about changing things back to their former state. She knew this, why couldn't she remember what it was? Revert, Reverie, Reverto! Yes that was it. She raised her hand,
"Professor, would it be Reverto? That trsnsforms something back to its earlier or previous state."