Pledge your allegiance to Slytherin with this magical house flag! Display the Slytherin crest on the wall or open the flag to join Draco Malfoy, Pansy Parkinson and Blaise Zabini in Slytherin's Underground Drawing Room. Sit by the sparkling fire and look out the window at the underwater scene of Black Lake. Look for the secret message. But watch out for the eyes that watch your every move!