- I can't find The Heart of Azeroth quest line
- I am unable to start the quest A Dying World
To obtain the Heart of Azeroth you must complete the quest A Dying World. This quest requires your character to be level 50. The quest is pushed to you when you visit your capital city Boralus or Dazar'alor, as long as your character is not on the introduction to Dragonflight quests. There is no other requirement.
If you abandoned the quest line in error, go back to Boralus or Dazar'alor and talk to the Earthen Guardian to help you get back to the Chamber of the Heart.