Age of Heroes
Witchcraft is the ability to manipulate magical energies by the force of will and the use of natural power. It is not an exclusively female skill but women are much more adept at its use than men are; male characters always make Witchcraft checks at a –4 penalty.
You make a Witchcraft check to produce magical effects or prepare magical objects. A Witchcraft check is made as a standard action and provokes an attack of opportunity.
Other characters can assist a caster to produce magical effects with Witchcraft; see the Group Casting entry in the Magic chapter for further details.