Nicodemus Archleone's noose

Nicodemus Archleone carries a noose at his neck, which gives him access to certain kinds of magic.

Description
Believed to be the noose Judas used to hang himself, it is a powerful magic object, capable of death and entropy curses. The noose does not get soaked in blood.

Death Masks
In Death Masks, the noose allows Nicodemus Archleone to cast a Barabbus curse against Harry Dresden.

Small Favor
In Small Favor,

Skin Game
In Skin Game, in an attempt of saving Harry Dresden from the attention of the Genoskwa, Karrin Murphy threatens to remove Archleone's noose from him and hand it to the Church. However, she fails.