D-Darkangel

Sixth year at Hogwarts; Draco Malfoy and Blaise Zabini are using some very interesting 'substances'. When Draco and Harry place a bet, Harry completely changes in all ways and starts using the mysterious drug, too. But nothing seems to last long when the professors come up with a ‘reasonable punishment’ for the two. Who will win the bet? What will be the consequences? And why does Lucius act strangely out of character? Eventual H/D.