dark fantasy greatsword 3d model

Create a stylized dark fantasy greatsword with a powerful, aggressive silhouette. The blade should be wide and heavy with sharp, jagged edges and a molten lava core glowing through cracked seams running down the center. At the crossguard, place a large demonic skull with glowing ember eyes, partially fused into blackened metal. The crossguard should extend outward in spiked, wing-like shapes with hanging chains and a small lantern for added detail. The metal should look worn, dark, and slightly charred, with engraved gothic patterns. The overall design must feel cursed, ancient, and boss-tier, with strong contrast between dark steel and fiery orange glow.