A close-up, cinematic portrait of a Slavic demigod necromancer during a nocturnal blizzard. His face is a ghoulish, pale-skinned mask with a wide, terrifyingly toothy grin and hollow sockets glowing with intense orange embers. He wears an intricate, frost-covered crown made of jagged bones and black iron, with a single amber gem pulsing at its center. Wisps of long, dark hair and tattered red-and-gold rags whip around him in the freezing wind. He is hunched slightly, clutching a jagged staff that radiates a cold, violet-and-pink necrotic fire, which illuminates the swirling snowflakes with eerie neon light. In the blurred background, the silhouettes of winged night creatures loom over gothic stone architecture. The style is hyper-detailed dark fantasy, focusing on the textures of weathered skin, ancient metal, and the chaotic interplay of snow and arcane energy.