I was going to suggest writing fiction or even screenplays. I have had similar fantasies, but I usually see myself as a superhero helping those I think deserve it, and punishing those who deserve it, *according to my ideas of punishments for them*. Now, of course, to most, I would probably be seen as a vigilante, although having powers might make people think I'm a villain, just because people are often afraid of people who are different and powerful.

So, it's a normal fantasy. Get creative. Write, draw, make a film, create a graphic novel, or whatever way you want to express it.