The beings that are invoked have many designations, such as deities, spirits, thought-forms, and numerous others. Because the ability to invoke entities is fundamental to the practice of Traditional Witchcraft, all of the Coven meetings are geared to this end. Ophidians will invoke, or create, any entity they deem proper to the occasion. Very often they will choose a being from their rich and diverse Elf-lore. Nature spirits abound everywhere, living on land and in water.
Rituals always take place outdoors, at night, usually around the time of the new moon.
Three concentric squares are drawn, intersected by four lines. The sides of the squares face the cardinal directions, and an object of a specific colour is placed just outside the largest square at the four sides. The four quarters themselves are known as the Four Brothers. Once created, the sacred space is known as the mill . The mill is entered from the west, at the southern end of the western perimeter.