Create a highly detailed black and white SVG vector illustration featuring a magnificent stag with an elaborate antler crown adorned with subtle Christmas ornaments, pine branches, and delicate snowflakes integrated into the tines. Position the stag as the central focal point standing regally in an ancient winter forest with towering evergreen trees that have intricate bark textures, gnarled roots, and detailed needle clusters creating depth and atmosphere. Develop the background with layered mountain ranges using sophisticated crosshatching and stippling techniques to establish proper atmospheric perspective and a sense of vast wilderness. Incorporate falling snow with varied particle sizes and directional flow patterns that suggest gentle movement and winter wind throughout the composition. Add botanical elements such as holly branches, winter berries, pinecones, and frosted foliage rendered with botanical accuracy and fine line work. Include subtle magical elements like a distant view of Santa's sleigh silhouetted against the moon, twinkling stars of various sizes, and aurora-like patterns in the sky created entirely through line work. The overall composition should balance naturalistic wildlife illustration with festive winter atmosphere, demonstrating museum-quality draftsmanship suitable for premium apparel, fine art prints, and sophisticated adult collectors who appreciate detailed nature artwork.