There are two spiritual communities. One is holy the other is fallen. Witchcraft and such things ie; card reading, palm reading, horoscopes, all of them connect to the fallen community.
Witchcraft sorcerer's and such are material cultures that seek out and receive spiritual goods. The Church is a spiritual community that seeks out and receives material goods.
The fallen angels work in the darkness of souls given over to them. They communicate through the subconscious. Subtle movements of the body that people are not aware of but the fortune teller is made aware of by a fallen spirit who by them gains knowledge.
The powers of the dark arts do not appeal to a the eternal soul they are not concerned for it's good. They appeal to the temporal life exclusively. Worldly want, desire, and need is the scope of their power.