Scrying is a magick practice that involves seeing things psychically in a medium such as a scrying mirror. A scrying mirrors purpose is to obtain spiritual visions and more rarely for purposes of divination or fortune-telling. Scrying Mirrors are used most commonly because reflective, translucent, or luminescent substances are considered best for seeing into the future. Scrying mirrors have been used in many cultures as a means of divining the past, present, or future. Depending on the culture and practice, the visions that come when one stares into the scrying mirror are thought to come from the Gods, Goddesses, spirits, the psychic mind, the devil, or the subconscious.
For more information on how to use a scrying mirror: