Honestly, I didn't think I would manage to reproduce the most important detail of the style, because it was tied to a single model.
Trigger words: myst1cs, fantasy, swamp, water, forest, swamp vegetation, foggy atmosphere, (glowing fog)
Other prompts: curse monster sphere altar
Negative prompts: (text:1.9), (signature:1.9), (copyright:1.9), (trademark:1.9)
Avoid removing "atmosphere" and "glowing" from the prompts, those are the two most important words.
Strenght: 0.7 -> 1