What you believe, how many rituals and preparation one needs to partake in order to fulfill certain wishes. Correct procedures are given as well as when to proceed with the ritual. Any incantations embody power of a sort, the power to enter the universe and cause an effect. The wish is projected into the invisible world from the tangible visible world through the wish bringing incantation.
Power refers to inner energy, the source and energy behind the ability to transform.
The crystal is used as it is fossilized water. They are used to assist your wish, as if squeezed. They produce electrical energy. The crystal is also the gateway between the physical world and the ultraworld. All psychic abilities are amplified by the use of quartz type crystals.