Forged from the very essence of the cosmos, the legendary weapon known as the Abyssal Shard wields the awe-inspiring power to command dark matter and summon voids of nothingness. This extraordinary fusion of arcane magic and advanced technology boasts a sleek, obsidian blade that drinks in surrounding light, accented by luminous crimson veins that pulse with cosmic energy. The hilt is intricately adorned with celestial motifs resembling nebulae in collapse, and at its heart hovers a mysterious core of dark energy, emitting a mesmerizing gravitational field. Once activated, the weapon warps reality, creating undulating distortions and with a mere swing, can rend the fabric of space itself, opening ephemeral singularities that devour all within reach. A supreme construct of annihilation and cosmic supremacy, it is a force feared by deities and mortals throughout the universe.