This sounds similar to a spell I once read in a book called "Earth Magic" which is good, natural magic. The spell is about rendering a past life which you can see in the mirror while staring at your face. You light a white candle and set it down, stare at yourself, and chant "Oracle of lunar light, send me now the second sight." Your face will seem to dissipate and reform into one of your past lives. You can see events or memories of your past life in the mirror. Of course, this is all theoretical, like magic in general. I did try it actually, very intriguing.