I was actually just about to give up completely on the seed and try something else altogether, and deleted most of my prompt that was trying to specify colours, shapes, etc. Now that I think of it, I usually have better luck with a simpler prompt.

(professional photography:1), (epic lighting:1), (geographical landscape shot:1), (exotic alien planet) (high resolution, 4k hdr)

Negative prompt: blurry, out of focus, bad drawing, sketch, text, annotation, writing, font, letters, ((people)), ((watermark))

Steps: 30, Sampler: DPM++ 2M Karras, CFG scale: 8.5, Seed: 1575107236, Size: 768x512, Model hash: bfea7e18e2, Model: AbsoluteReality, Version: v1.4.0

Was a lot faster than I was expecting! I think it was probably ~2 hours, and a good amount of luck to find it. If I could wrap my brain around inpainting, or had any kind of actual artistic skill, I could have added the bits of rock/scale that kinda fell away as the “seeds” lifted away, and they had some more variety between them too.

I think a whole bunch of games made by Tops might fit into what you’re looking for. They kinda reskin the same thing for various audiences (Baseball, Hockey, Star Wars, etc).

I haven’t played in a while, but I remember pulling some really rare cards (only 3 others in the world), and then being able to trade them with other players for a bunch of lesser ones.