Incantatrix

Incantatrixes are the definitive practitioners of metamagic in Faerûn, devoting themselves to the study of spells and techniques that affect other spells. They deal with magic in its raw form, shaping it according to their own desires rather than any external laws of magic. They can apply their deep understanding of metamagic to alter spells their allies cast, spells they cast from wands or staffs, and even spells that have already been cast.
Most incantatrixes were previously skilled wizards or sorcerers, although a few bards also study this type of magic. Divine spellcasters rarely adopt this class-perhaps, as the incantatrixes say, because their magic is tinged with divine influence and therefore less "pure" than arcane magic. Most incantatrixes are female; the rare males who take up this class are known as incantatars.
Incantatrix NPCs usually act independently, but sometimes they join together to solve a common problem. Since they dislike extraplanar intrusions on the Material Plane, they see the destruction of active portals to other planes as their responsibility. Thus, an incantatrix is usually a knowledgeable source of information on functional portals in the area. Because incantatrixes have little offensive combat magic that is effective against normal creatures, they prefer to avoid combat or travel with companions who balance their shortcomings.