Mystical sorceress with cascading obsidian hair stands defiantly before a menacing demon, her form composed of ethereal black flames; fantasy art captures the epic scene reminiscent of a legendary fantasy card game, her enigmatic side profile epitomizing a dark witch's allure; entangled with dynamic, striking light that accentuates the intense contrast, the scene unfolds in ultra-high-definition 4k detail, revealing the powerful aura of the sorceress amidst the swirling, magical ambiance.