The arch devil is the upgrade to the devil, the seventh-level creature of the Inferno in Heroes of Might and Magic III. It can be trained from the Upgraded Forsaken Palace. With a higher speed than the devil, the Arch devil can attack any unit from the first round of combat, which is useful in small skirmishes. In proper combat, sending it too far from allied units can be a mistake. Like the devil, the arch devil is excellent for hit and run attacks, and targeting weaker members of the enemy army.