God of Magic, Spells, the Weave. Neutral Good.
The Lady of Mysteries, the Mother of All Magic, Our Lady of Spells
Mystra is the goddess of magic and with that the goddess of possibilities, which makes her arguably the most powerful deity in Orius. She is said to have taught the first spellcaster of the Realms, and to have enabled many of the races to use magic. She supposedly weighs and judges each new spell or magical item to determine whether it should be permitted into the Realms. She is most venerated by wizards and those who use magic or magical items in their daily use. She differs from Azuth in that Azuth is the god of wizards (as to a much lesser degree, all spellcasters), while Mystra is the goddess of the essential force that makes all spellcasting possible. She provides and tends the Weave, the conduit to enable mortal spellcasters and magical crafters to safely access the raw force that is magic.
Mystra's typical manifestation is as a blue-white, pulsing glow on items, beings, or places that the goddess wishes to draw attention to, such as a hidden door or item. She also appears as a slender, graceful, disembodied human female hand outlined in blue-white motes of light that points, gestures, writes, inscribes lines on stone with one finger—often writing the tomb inscription of a powerful dead mage as an obscure clue—or unleashes spells.
Choice, decision, and knowledge, leavened with a healthy dose of good for the most individuals, are the hallmarks of Mystra's faith. Magic is great power, and it brings with it great responsibility. Mystra's clergy are given the following charge upon aspiring to the faith:
"Love magic for itself, not just as a ready weapon to reshape the Realms to your will. Learn when not to use your magic, and you will have learned true wisdom. Play with magic and learn how best to wield it, but not when the price is paid by others. Strive to use magic less and less as your powers develop, not more and more; often the threat and promise of Art outstrips its performance."
"Remember always that magic is an Art, the Gift of the Lady, and that those who can wield it are privileged in the extreme. Conduct yourself humbly, not proudly, while being mindful of this."
"Use magic deftly and efficiently; eschew carelessness and recklessness in the unleashing of Art. When magic imperils you, hide it or hurl it away into other planes rather than destroy it, for any destruction of Art is a sin."
"Seek always both to learn new magic and to create new magic, but experimenting to learn to craft something oneself is better than merely buying scrolls or hiring tutors. Exult more in creation than in hurling spells, and ensure that your creations are shared with others and so outlive you."
All wielders of magic and seekers after arcane lore of any race are welcome in the service of Mystra. The hierarchy of the Mystran faith is wide and varied, separating into orders concentrating on one form of magical energy or another. Clerics, priests, wizards, and bards can all he found in its ranks without regard to experience level or origin. The general rule of the Mystran faith is that talent and ability for the job outweighs social rank or legendary feats. Only those clergy members who gain their spells directly from a higher power gain their spells directly from the goddess, but all are welcome within the church's hierarchy. Relations between the various orders and subgroups of the faith are very good. The priests of Mystra are known as Servants of Mystery. Higher level priests, both those with title and lands and legendary adventuring priests, are called Ladies or Lords of Mystery. Titles within the faith vary from temple to temple and follow no standard form across the whole of the church, though most temples are rigidly self-consistent.