Things I've learned from this book...
Greek shamans/sorcerers, or Goêtes, are characterized by the ability to manipulate their own spirits, detaching them from their bodies, as well as manipulating the spirits of the dead.
Epimenides was said to have been the first to have purified houses and fields... in essence he was the first Guardian.
To lay a spirit to rest permanently you must first raise it up fully in order to lay it to rest for its last and final time. The person who practices this is an Evocator, a psuchagôgoi, literally "soul-drawers".
The dedication of double effigies is a known technique of ghost-laying.
Purifications - katharmón
Charms - epagôgai
Binding Spells - katadesmoi
Incantations - epôidai
Diviner - mantis
Interpreter - teratoskopos
Prophecy/Divination - mantikê