USW: Tip the World Over on Its Side
You’ll need a fish tank with at least one living fish in it. Cut your hand and bleed into the water; the face and name of the person to cast the most recent long-duration enchantment on you will be revealed. Apparently, if no one has cast any long-term magick on you, then you’ll see the face of a woman with her name rendered in Egyptian hieroglyphics.
Of course, who knows if it’ll work? Jones tried it and didn’t see anything.