The Necromorph Blade Arm is a grotesque, organic weapon formed from the mutated flesh and bone of its host, featuring a long, curved blade that extends from a twisted, sinewy arm structure. The blade itself is razor-sharp, with a serrated edge and a slightly translucent, bone-like material that gleams under light, while the arm exhibits exposed muscle fibers, pulsating veins, and patches of necrotic skin. The entire structure is adorned with irregular growths and bony protrusions, giving it a highly asymmetrical and terrifying appearance.