Witchcraft is mind magic, and mental power is the effect of how much focus, one yields to the effect of a physical linking action. This in effect is the rules of thaumaturgy, affinity, and mind over matter used in different manners of different ceromonies. To me, witchcraft is a cheat one can effectively utilize to occur any event or action if done right. There is only one rule in this field of mind magic. That is if the moment is right, the act of ritual, will incur what the person was intending through the ritual.