"Isengrim’s Bane is a weapon with a powerful curse on it," she said, kneeling by the first cot. This was the amputee case, the worst off by far. He was twitching and moaning, his fur drenched with sweat, tongue hanging out. As she spoke, she cast Cooling Charms, making the other wolves raise their hackles at the flickering wand. "It’s Dark Magic specifically meant to target werewolves and vampires. When the cursed weapon touches the blood of a Dark magical creature, it infuses the flesh with a warped magical essence of silver. The body begins to attack itself. We need to bring their fevers down, stop the bleeding, and counter the curse with a potion."