I would simply keep an eye on all things casually, making sure things are running smoothly (although I would allow a large margin of error to be present to allow chaotic results, to make things interesting). If I felt interaction was necessary, I would do it in stealth and minimize the use of manipulating the laws of physics to achieve my goal. I wouldn't be very personal often and judge on a planetary or system basis, not judging individual beings (because I'd feel life forms have their own responsibilities, they have free will for a reason). If an individual potentially serves a vital purpose for my objectives, I would personally use them to assist in my general goal. Although I would avoid telling them who I am directly, or what they are representing entirely. Why I would do this? Because I feel they need to figure those answers out themselves and understand why I chose my means of interaction (and soon enough they'll realize the implications being apart of an deity's goal can be dangerous to reveal to others).
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"Have a nice apocalypse" - Southland Tales