Cult of the Many-faced God

Less of a single organised cult than a collection of fractured small cults with similar religious views. Fundamentally they all believe that two or more major deities are merely different aspects of faces of a single 'true' deity.
The two most widespread of these cults are; the Order of the Triple Goddess, which believes Murrthir, Lakia and Vrida are three faces of a single, all-powerful Goddess; and the Cult of the First One, which goes a step further and believes that even Absylus is simply another face to this all-powerful deity.
Even these two, the largest of the cults, are not a true organisation, but typically made up of like-minded people associated with one or more of the deities in question.