My idea is pretty simple, for an entire month you hand out codes to every single DC comic published that month. The codes should include superman, wonder woman, and batman. No costumes or anything, just a simple champion code that will reach hundreds of thousands of DC fans. Marvel comics publishes a code for a digital copy of the comic you bought, so it isn't that far reached. And DC comics has promoted their TV shows, their movies, other video games like the arkham and lego series. These three simple codes will bring in a lot of fans of DC comics. especially if they already start the game with 3 champions.