Established source
Mentalism combines the Celestial Domain and the Quasars rather than drawing from thought as an independent fifth power.
Rosmer CreativeLife and substance converge in the magical tradition that opens the Age of Enlightenment.
Mentalism is an emergent hybrid of Celestial life and Quasar substance. Its place between those Powers is canon; its detailed practice remains to be articulated.
Mentalism combines the Celestial Domain and the Quasars rather than drawing from thought as an independent fifth power.
Its first discovery begins the Age of Enlightenment.
Its original plane, mental disciplines, boundaries, costs and relationship to embodiment remain active areas of canon development.