Board Thread:Dragon City Gameplay Questions & Answers/@comment-26889659-20150827135216/@comment-779290-20150827153120

Dragons summoned in the ancient world stay there and can't be used for fights. They can be bred in the breeding dome once they are level 2. The eggs from breed ancient world dragons go in the hatchery on the main world so they can be used for fighting. Since they have ancient world elements you have to get the appropriate habitat or put them in a Kindegarten or Dragonaurium.