Blood Dagger

She stared at the dark blade with a queasy feeling. Not because of its dangerous, curved shape. Not because it was one of the most ancient weapons in existence. But because of its dark red, almost black, color.
"Is... are...?"
"Yes?" the elf prompted.
She looked up at him. "When I think of materials, I think of..." She gestured to her stone necklace. "Stone, wood, metal. That makes sense. Is this really made of blood? How?"
"Yes to the first question. To the second, we don't know what magic binds it together. We just know it works."
The thought of this becoming a dragon that desired blood, like some ultra horrific vampire, made her hand the blade delicately back to him.