A Herald-Mage is a specialized magic user in the fantasy series created by Mercedes Lackey. These individuals serve as messengers and diplomats, often tasked with delivering important information across vast distances. They possess unique magical abilities that allow them to communicate telepathically and travel quickly, making them essential for maintaining connections between different regions. Herald-Mages are typically chosen by a magical horse known as a Companion, which bonds with them and enhances their powers. They play a crucial role in the governance and protection of their realm, often working alongside other key figures such as Heralds and Kings to ensure peace and order.