Disciples II Rise of the Elves is the third expansion pack in the Disciples II series. It introduces a new race, the elves, a new form of mana only used by the elves, and a variety of new units, items, and spells. Although Rise of the Elves is an expansion pack, it is stand-alone and includes the original full game.
For those not familiar with the series, Disciples 2 is a turn based strategy game with fantasy units. In it, you control one of three types of heroes, each of which commands up to 5 combat units. Each stack of units roams the map, picking up treasures, raiding tombs, fighting neutral monsters, fighting opponents, and capturing cities. All captured cities only produce units of your own race so act as a staging point to heal and summon new units. A captured city gradually controls the land around it and any resources on that land then give you gold or mana per turn.