There seems to be a surprising lack of Forgery Seal / Soul Stamp / Essence Mark fan-art in the Gallery, so let's fix that. Hurrah for abstract art! (AKA scribbles -- with style. ) Mine's a bit more messy than the original, but I'm still pretty happy with how it turned out, considering my less-than-comprehensive education in the visual arts. Plus, I had fun drawing it, which is its own reward.
Here's the official one, for comparison: