Vesperfang, the Anger Unbound

This longbow appears to be a vague, frightening shape carved from pure darkness. Its limbs trail into wisps of shadow, while glowing purple veins run through its body like cracks in a dying star. The grip feels cold at first, but grows warm as the wielder's anger rises. Its string is nearly invisible until drawn, when it becomes a taut line of violet light. The bow creates its own ammunition from condensed shadow, forming black arrows with purple fletching that vanish after they strike or miss.