The Blackcliff Agate is a sleek, high-detail catalyst weapon with a dark, metallic finish and glowing crimson accents. Its design features a sharp, angular form with intricate engravings that pulse with energy, suggesting its powerful nature. The core of the agate is a polished, deep red gemstone that emits a faint glow, set within a framework of blackened steel with subtle weathering to indicate its storied past.