What can be done with magic in your world? Can it be used for things like healing? Creating certain things? Levitating objects? Telepathy?

etc. And as a girl I feel obligated to ask: are there female wizards?

And in answer to your sidetrack, no, I don't think Elanhil sounds like a woman's name. Elan, which means "tree" in Hebrew, is consider both a boy's or girl's name, though I have heard it most often used as a girl's name. But I think Elanhil sounds fine as a boy's name. To me, most names only sound girlish if they end with an a.

In most other stories the dark magic tends to be more powerful. However, since magic in my world comes from The Creator(God), White magic is has more potential. So, in answer to your question, even though the Estolar aren't always together, only occasionally to discuss important matters (they are more of a group that vows once to do what's right and then mostly never talks to each-other again, except for important matters such as whether or not to fight in a war), potentially a dark wizard could be stronger than a white one, because perhaps the white wizard hasn't discovered the full potential of magic. But, if both had taken the knowledge of magic to it's highest possible heights, the white wizard would probably win.