It was difficult to read the names of each of them since they were crammed together tightly. Her fingers were skimming through the sea of folders when she came across tenebris, used famously to contain dark magic. Part of her had wondered if it would work for her potion. Was it still being used? She had heard it was illegal given that dark magic was illegal. She picked up the folder, opened it, and felt herself freeze. There was only one person to have used tenebris in the last several years: Draco Malfoy. The amounts he had been using, presumably on himself, were unheard of.