The Tenet Grigori is a sleek, futuristic scythe with a menacing curved blade that glows with an eerie energy. Its handle is elongated and wrapped in a dark, textured grip for secure handling, while the blade itself is made of a polished, metallic material with intricate engravings that pulse with a faint light. The weapon's design is asymmetrical, featuring sharp, angular lines that give it a predatory appearance, suitable for high-speed, acrobatic combat.