I was intrigued by the above image so looked up egregor ... here's some of what I found
(please notethat while these definitions of egregor helped me interpret the artwork ... I have no knowledge of the artist's intent or beliefs) ~ ladyoz
Web definition of EGREGOR :
Egregore is an occult concept representing a "thoughtform" or "collective group mind", an autonomous psychic entity made up of, and influencing, the thoughts of a group of people. ...
When a group of people pray and meditate collectively towards an objective, an Egregore of protection and blessing is sent forth, as a circle of Light that shields and safeguards the objective of the prayers.
Psychologically speaking, an Egregore is that “atmosphere” or “personality” that develops among groups independent of any of its members. It is the feeling or impression you get when walking into a neighborhood that “feels different” from the surrounding area, or when visiting a club or association that has been around for a long time.
In an occult or magical context, an Egregore is the general imprint that encircles a group entity. It is the summary of the physical, emotional, mental and spiritual energies generated by two or more people vibrating together towards the same goal; being a sub-product of our personal and collective creative process as co-creators of our reality.