Here's the deal as I've got it settled so far.
The world is called Crenna. It's a world where women who wield the magic (called a witch) rules and the men are considered second class citizens as best. Some witches operate in covens, and every major region of Crenna is ruled by a coven. Generally, a coven is thirteen members strong. There are four groups of three witches called a Trinity. Each trinity rules a quadrant of the coven's region. As well, each trinity specializes in a form of magic. The thirteenth member is the ruler, and she's able to access to some degree each of the four forms of magic practiced by her coven.
The ruling coven is Coven Birthright who rule from the city of Galdra. They are the most powerful and oldest of covens. They are broken down into four groups of three as well. The ones I have created so far are Sirahna, Alahna and Dormahna. They control and govern the northern section of Galdra. They also weild earth magic (I call it earth magic because I really don't know what else to call it. Basically they have control over fauna and flora as well as able to make the planet's surface move to create planetquakes.)
More about the trinity. When three witches come together in a special rite called The Bonding, they create a trinity. They are then able to access each other's memories as well as any pysical gifts. For instance, in a trinity, only one 'sister' has to study because the other two sisters gain her knowledge as well. Only one sister has to exercise because the others gain her physical strength as well. The drawback to a trinity is that the bond is so complete between the sisters that if one of them dies, the other two will soon follow her into death.
Each coven has freedom to practice it's own philosophies, and so therefore some covens are devoted to good as some are devoted to evil. There are occassionally battles between the covens as a result. Their cities are populated with lesser witches and their mates. Those females that can't access magic are then considered 'useless' and turned into servants or sometimes worse, slaves. Some covens also consider the men nothing more than "Seeders" useful only for breeding and other forms of entertainment. Those men are kept in harems for the women's pleasure.
I already have a story in mind for Coven Birthright, and more specifically the trio of characters I mentioned above. But feel free to add your own characters. Soon Coven Birthright will be vulnerable and open for an invasion from another coven, so I'd like to see some of you create more ambitious or evil witches to come up and fight for control over Crenna. As well, there will be plenty of need for more Birthright members, as well as less powerful witches who reside in Galdra to fight over the invading coven(s).
The only real request that I have, is unless you're using Birthright, the other covens can't access one of the five elements (Earth, Air, Water, Fire, and Spirit). Since those are the most powerful forms of magic on Crenna, they are reserved for Birthright. Also, if you create a character that belongs to Birthright, I only request that you PM me first for additional instruction since I've got Birthright developed further than the rest of Crenna.
Sorry, this is mighty long, but I'm hoping that it excites ya'll enough to want to get involved. Don't fret, if you're interested but not available to participate now, just keep checking and soon there will probably come a time to jump in.
Editted to reflect that there are five major elements, earth, air, water, fire and spirit. Thanks, Jacen for pointing out my mistake.
Also, I'm open to there being a coven devoted to one particular element, as long as they don't proclaim themselves more powerful in that element than the witches who practice that particular element in Birthright. At the best, they would be on the same level.