A deck of tarot cards contains everything you need to work a complete and effective system of ritual magic. With the cards alone, you can construct an astral temple, build an altar, cast a magic circle, create a triangle through which to actualize your purpose, manipulate the blind elemental forces of nature, communicate with other people and with spirits, cleanse atmospheres and places of destructive influences, make potent charms, extend and perform works of healing. You can use the Tarot to accomplish any purpose you would seek to achieve through more cumbersome and complex methods of ceremonial magic.
… The Taro is a symbolic model of the universe. Nothing external to it is required. … The magic is not in the cards, which are merely tools used to construct rituals and to represent various instruments and forces. The magic is in the person using them. The card’s act to focus and project the power of the mind.Donald Tyson