I have always considered The Phantom Stranger to be the Rod Serling of the DC Universe, with his tendency to show up at moments of crisis or pivotal decisions for various characters. Rather than being an overly proactive presence, he prefers to steer heroes in the right direction, but ultimately they still have to be the masters of their own destinies.
Thank you to Marc Tyler Nobleman, comics' historian and Patron of this blog, for suggesting this team-up!