Draco and Blaise entered the Room of Lost things. Snape was waiting for them. They chanted "Harmonia Nectere Passus. Harmonia Nectere Passus. Harmonia Nectere Passus" and the door opened. The First ones thought were Yaxley and Greyback. In the next 15 minutes, over 40 death eaters had arrived in the room of requirement. Nott Sr. and Draco’s parent’s were the last to step out. Finally the cabinet glowed and Voldemort stepped through it