In the backstory to the campaign I'm developing, a big demon from the Demiplane of Shadow ripped open the barriers between the Prime Material and his plane and tried to pull the world into the plane. A new god was born, fought off the incursion, etc. etc. However, there are leftovers from the invasion, even an entire Age of history later. I was thinking of using a re-colored vector image of a laceration to depict the areas sill "wounded" by the invasion, but I was wondering if other folks might have better ideas?

Thank you!