Moon Goddess
The Moon has always been associated and related to something magical, omnious and sacred. The poetic magic of night spreads its influence on the human conscious helping the concept of the Moon to establish itself even more. That is why there is an archetype of moon goddess in every pantheon, as the Moon itself is one of the part of dualism lying in a base of almost every religion and magic worldview. This dualism begins with the concepts of darkness and light, birth and death, and goes further to man and woman. Thus, the Moon, mostly female, is opposite to the Sun, who are mostly male.
The world knows tens of moon goddess, among them there are Kaguya, Ishtar, Bastet, Selene, Hecata, Diana, Isis and much more who are less famous.
In many pantheons the archetype of a moon goddess merges with the archetype of three-faced goddess. Especially, it is seen in her symbol that is pictured as a full moon with the waning and waxing moons on its sides. This symbol, apart from illustrating the concept of trinity, also presents the main lunar phases, so much important for different rituals.
Moon goddess is always responsible for such life spheres as woman cycles, thus, fertility and magic. There is even a distinct cult of Moon witches, and it is very popular nowadays.
As circling of Moon around the Earth is closely connected with the rhythm of ebb and flows, the Moon is a powerful source for all of the water's magic. Its power and effectiveness straightly depends on the moon phase.
In addition, many traditions are using Moon energy in rituals and actions aimed at healing and charging. This way was known even since ancient times.
Moon energy is particularly in demand when you need to regain an equilibrium of your soul.
So, pray to a moon goddess in case of stress and melancholy. Sing to her if you need to ask for fertility and benefits of your affairs. Charge your magic from her and blessed be!