He grasped the dagger with which he had cut the moths, disinfecting the blade over the fire. He pulled down the sleeve of his left arm, placing the tip against the pulsing blue vein in the center of his wrist. He applied pressure and the blade sunk into the flesh. Blood spurted out, propelled by the pressure of the artery, and Draco gritted his teeth, ensuring not a drop was wasted, positioning his trembling arm over the cauldron as he continued to cut.