Mortal Sword ("Seraph Blade"): This is an angelic sword that is wielded by the Shadowhunters. According to the series, the Mortal Sword is one of the three main Mortal Instruments, along with the Mortal Cup and the Mortal Mirror.
Mortal Cup ("Cup of Anubis"): The Mortal Cup is a powerful chalice that can bring Nephilim back from the dead, among other abilities.
Mortal Mirror ("Looking Glass"): Lastly, the Mortal Mirror is a powerful mirror that can show glimpses of the future, among other uses.