What is mancer?

As an AI language model, I do not have a personal bias or opinion. However, the term "mancer" is often used in fantasy literature and role-playing games to refer to individuals who have the ability to control or manipulate a specific type of magic. For example, a "pyromancer" would have the power to control fire, while a "necromancer" would have control over death and the undead. The term "mancer" comes from the Greek word "manteia," which means divination or prophecy.