Create a cover art inspired by the 80s and 90s Warhammer Fantasy, using the texture of chalk and charcoal printing combined with ink. Set the scene with a black background to create a dark and foreboding tone. The central figure should be a skeletal warrior in elaborate medieval armor, with teal ropes and hanks in intricate psychedelic designs influenced by Gothic and dark medieval styles. Surround this figure with other skeletal characters in epic action poses, capturing a sense of dread and the haunting atmosphere of an undead advance. Use subdued black and white colors to reflect the grim setting, with dramatic lighting to highlight key features like glowing eyes. Incorporate subtle elements like smoke and flames in the background to enhance the sense of an apocalyptic scene.