Luna listened and told Blaise what they were planning to do. A few minutes later Draco came back with the Gryffindor sword at his side. Hermione only now thought that they should’ve taken some Basilisk fangs from the Chamber of Secrets so that all of them had a weapon to kill the snake with, but she also had no idea there would be four of them on this mission, since the original plan involved only her and Draco, and in Draco’s plan, there was only him. So a single sword will have to do. They had no time left to waste.