ultra realistic space marine portrait with green decay and vfx effects

space marine ultra realistic portrait green decay vfx effects white background full body rust warhammer 40k 32k uhd majestic elephants postwar depth field toyen miasmas plague pale isolated horned spikes realism highly detailed rusty fantasy scifi artwork digital painting epic dark futuristic action helmet depicted full-body photorealistic figure showcases mottled texture toy-like proportions reminiscent golden age illustrations captures intricate details making visually striking piece generated