While reading a book on Pujya Mota, I found that a Kapalik used a bad spell on Pujya Mota to make him, his Sishya (student). I also found similar stories in other books and came across people who believe in these spells. So how do these spells actually work? How it possible that one just speaks a tantrik mantra and it hurts others?
First of all it should be noted that Tantra is not a synonym for "bad spells". It is a agamic tradition of worship. Power can be used in a positive or a negative way.
Marana comes under the "shat-karmas" of tantra. Here the will-power and power generated from the sadhana is used and directed against an individual. With the help of yantra, mantras, and other methods the energy is directed against the individual which can cause him grave diseases/paralysis or death. But such acts are extremely difficult to perform. It is only to be done when there is a great danger of life from the opposite person or any problem of similar magnitude. There are heavy prayashchita to be done if someone does the prayoga for extreme reasons.
It is a myth about Aghor sampradaya/sect. Aghora was a great yogi and he never endorsed any of the Maran Vidya n all. Kapalik is a sect which worships Tamas attributes of Shiva and they do not relate to Aghora sect.
The Maran Vidya was brought in to use by some sick people which has nothing to do with Vaidik Dharma.
I read in a book on Adi Shankaracharya that Maran vidya was used against him. In Maran a goat is prepared for slaughtering its neck as a symbol of the person under target and some 'tamas mantras' are used.
It comes in shivageeta that the one who performs Jaran, Maran or Vashikaran goes to hell for ages.
The person has to be comming up from bhurloka and the evolution of consciousness needs match the way ... lets just bring Rahu into point .... time builds up in the mind as to match the environmental conditioning and lack of grade made to grain of character thats from bon in gain of human life....