Black and Silver Framed Mirror

Approximately hand sized but shaped in an oval, this mirror defies all attempts at scuffing or marking both its shimmering surface and the frame that ensconces it. Etched into the back of the mirror is the circular shape with a line through it that has become familiar to you in the ruins that dot this land.
You noticed it changed what you saw when looking at certain objects, especially those created by the efforts of the Esper during the winter.