Harry, who found himself with his nose pressed up against the glass, nodded sharply. He saw Draco’s shoulders rise and fall as he took a steadying breath in and out. Harry watched nervously as Draco rested the fangs tip to the cup, preparing to stab the thing, but to Harry’s surprise, black smoke immediately began to pour from the point where the fang and the metal met. Draco looked at him briefly in alarm, but he refocused, and instead of drawing his hand back to violently plunge the basilisk fang through the metal, he instead pressed the fang relentlessly forward.