In Old School RuneScape, the Black Mask is a highly sought-after and iconic item. Also known as the Slayer Helm, it plays a pivotal role in the game’s Slayer skill. The Black Mask enhances a player’s combat abilities when assigned Slayer tasks, making it an invaluable tool for efficiently dispatching monsters. It provides a damage and accuracy boost, along with some defensive bonuses, when fighting creatures on a Slayer task.