Hecate's Mirror

From publisher blurb: Every Lots of Horror offering provides an item lot presented as though part of an auction. This is an easy way to introduce the item into your game: someone bought the item and now all hell is breaking loose! This release includes the Hecate's Mirror. Discovered during the mid-1700s in Athens during a construction project, this mirror is said to grant bad dreams (and worse) that sleep to close to it. Just what is this object's connection to the land of dreams and what could happen if its power is abused?