The dragon is the sixth-tier creature of the Mountain faction in Heroes of Might and Magic I. It is the strongest creature in the game, and easily able to defeat any other unit in a one-to-one fight. Dragons are immune to magic, and their fire breath attack will also damage the creature behind their target. As flying creatures with great damage and decent speed, they are a threat to any army. This reflects to their costs, being the most expensive unit in the game.