Mirror of Fate (object)

The Mirror of Fate is the titular object of the game Castlevania: Mirror of Fate.

It is a powerful magical instrument, capable of revealing someone's past and their true fate. It also seems to possess sentience, which manifests itself in the form of the Lost Soul, a mysterious creature whose purpose it is to guide those it encounters and steer them toward their fate.

Trivia

 * it appears that even creatures that do not cast reflections in regular mirrors can see visions in the Mirror of Fate, as seen in the case of Dracula and Alucard.