Completing the work begun in Mastering the Art of Ritual Magick: Foundation and Mastering the Art of Ritual Magick: Grimoire, this book contains the detailed instructions on how to build a key of correspondences and apply it to the nine rituals of this series. There is also information that will aid the seeker in forming a sustainable magickal working group as well as an in-depth analysis of the ritual structures of the nine rituals used in this system. Written for the intermediate student and practitioner, this Greater Key is the third volume in the Mastering the Art of Ritual Magick trilogy. This book is the final step in commanding the occult arts of ritual magick, and is recommended to anyone seeking to master the art of building a complete magickal system.