I have searched the sticky post with the habitat list for what I am looking for and cannot find it. Many habitats that were not originally upgradeable are now. But I would like to know if different ones are upgraded to 4 or 5 dragons. I want to get the most I can for my gold and don’t want to spend 200-300 gold for one slot upgrade. Is there a guide with all upgradeable habitats and how many dragons they hold?