It's currently the 3rd smallest knife in the game, and one of the thinnest knives in the game.Shadow used to have a different throw animation to a normal knife.Shadow used to let you be invisible for 6 seconds and attacking would deactivate it for 15 seconds, similar to the Ghost Perk, although there is a 1 second difference when using the actual perk.
The knife is a re-texture of The Seer, but it also changes color at every colored part of the knife. While crafting a Random Painted Seer, there is a very small chance of crafting a Chroma Seer. The end of the handle has mini golden rings with another mini handle as well. Its guard is bright golden while its handle is thin with a shade of violet.
The Shadow knife is a katana shaped weapon with a long, thin, purple blade. It can now only be obtained through trading. Shadow is a vintage knife originally obtained from Murder Mystery 1, purchasable for 125 Cash at the time.