What are "curse workers" in the novel, White Cat?

A curse worker is a person who can perform various specialized curses on people, such as giving them good or bad luck, changing memories, influencing emotion, or transforming objects and living things. Throughout history there have always been some people able to do this, but the 'gift' is quite rare. Children of curse workers are more likely to be curse workers than children of ordinary people, as it is passed down genetically. However, the type of curse worker that a parent is does not influence what the child will be. For example, two luck worker parents may produce a memory worker child.