Created by advanced Artificers through the use of Sigil Scribing, an Arcane Tocsin is a powerful item that has the ability to accurately detect magic users within ten feet of its presence. A singular blood-red garnet marble, intricately Sigil Scribed and pressed into a carved stone base. The marble itself seems to float undisturbed within the stone base, and if touched will barely jostle within the socket, simply rolling about. The marble cannot be removed from the stone base unless the stone itself is broken, though the ability of the marble will not remain after destroying the base.