You will hatch a dragon towards the beginning of the game. To strengthen it, feed it to increase its experience. It will become stronger when it levels up. You can obtain dragon food as quest or campaign rewards or purchase it with rubies. You can equip your dragon with armor pieces obtained from campaign missions. When your dragon is level 4, it can be sent to the Dragon Cave to search for treasure. Note: Your dragon cannot help you attack or defend if it is searching for treasure.