Marauders' Map
Magic
A large piece of parchment folded multiple times. When the correct password is uttered, ink lines appear all over it, displaying each and every hall of Hogwarts and all of the secret passageways.
0.5 ounces
A typical piece of parchment
Sometime between 1971-1978 by James Potter, Sirius Black, Remus Lupin, and Peter Pettigrew (the original Marauders)
Has a spell on it so that it shows the writing when one phrase is uttered
Has a spell on it so that it goes blank when another phrase is uttered
If the phrases are unknown, it is designed to insult the person trying to get in
Bex