Players can earn the ability to do battle while on their mount by completing an epic quest line spanning across multiple zones. Starting at level 60, this quest line will automatically become available. Upon completion of this quest line, players will receive a mounted combat license.
Not every mount will be capable of mounted combat right out of the gate, but upgrade options are available. Any non-combat mount is able to be upgraded into a combat ready state. The license that enables this system is a temporary one, but can be renewed at will by spending vendor points. There is no limit to the number of mounts that can be upgraded with this system.