Create an exact 1:1 visual replica of the Roblox limited item "Infernal Undead Immortal Sword". Do not redesign. Do not reinterpret. Match original proportions and silhouette exactly. Overall: Total length 4.6 units. Blade slightly oversized compared to handle (top-heavy look). Strict symmetry. Blade: Length 3.35 units. Width 0.65 at widest point. Thickness 0.13. Double edged. Edges slightly darker than blade center. Very subtle concave curve on both sides near mid blade. Tip sharp and slightl