Spending Gems inside the Fountain of Youth will turn your adult Dragons into their adorable baby forms—regardless of their level! Babified Dragons can still fight in combat with the same stats and unlocked skills, search Ruins and take part in Enchantment League battles. They will temporarily switch back to their adult forms when taking part in these actions, but will be returned to their baby forms afterwards. You can reverse the babification by returning the Dragon to the Fountain of Youth.