Scrying
When you witches use crystals and then prisms and mirrors to divine images of who you're trying to find.
Scrying is a type of location spell used by witches. With the aid of crystals, prisms, or mirrors, witches are able to divine images and the location of any individuals they are trying to locate.
Episodes
11.03 The Bad Seed
Sam and Dean interrogate a witch who survived a demon attack on Rowena in a restaurant. The woman feigns ignorance to being a witch or knowing what scrying is, but when Sam dumps out her purse and finds chicken bones, hex bags and a pentagram, she attempts to perform a spell, but it stopped. Dean convinces if she gives up Rowena, Crowley would no longer want her dead. Telling the Winchesters she doesn't have her crystals, Dean offers her her cosmetic mirror. After a simple Latin incantation, the witch is able to divine Rowena is packing a bag
"Ostende mihi illum quem quaero."
12.14 The Raid
When the Alpha Vampire leads a vampire attack the British Men of Letters Mobile Command, and cause the comms to go out, Serena Colman suggests a scrying spell to get a message to England for help. Sam shoots this down, telling her they can't wait for backup.
14.18 Absence
Rowena tells Sam that her attempts to use scrying magic to locate Jack have failed, due to his energy being too unstable, claiming it was like looking at the sun.
