This organic-looking dagger is not forged from metal, but "grown" from the biogenic lattice of a Void Sponge 🧽, a parasitic extraterrestrial organism that feeds on dark energy. Its hollow, vein-like structure is the creature’s actual digestive system, preserved and hardened by exposure to a vacuum. When the dagger cuts flesh, it siphons the victim’s bioenergy to sustain the sponge’s dormant cells, causing the blade to glow with a faint, purple light. The lattice handle is lined with sensory tendrils that merge with the user’s nervous system, granting them enhanced reflexes—but at the cost of their own energy.

However, the weapon is a double-edged curse. The Void Sponge’s consciousness still lingers in the dagger’s lattice, and it slowly drains the user’s life force to survive. Those who wield it for more than a month begin to experience vivid hallucinations of the creature’s home dimension, a realm of endless darkness where time flows backward. Worse, the sponge occasionally "awakens," forcing the user to attack living beings to feed its hunger. During a 2301 expedition to Alpha Centauri, a scientist using the dagger became so consumed by the sponge’s urge that he killed his entire team, leaving only the glowing dagger behind.

The dagger was sealed in a quantum containment vault by the Interstellar Research Institute 🔬, but a cult that worships the Void Sponge broke in and stole it. Today, it is used in their rituals, where it is known as the "Void-Weave." It is said that only those who embrace the darkness can wield it without being devoured.