The Shadow Case is a weapon case released in 2015 that contains 16 weapon skins, ranging from Mil-Spec Grade to Covert, with knives as its rare special item. SkinsMonkey lists every Shadow Case skin with prices for each wear level.
The Shadow Case was released in CS2(CS:GO) as a part of a regular update on 18th of September, 2015. The case contains 16 community-designed CSGO weapon skins. In addition, players who open the container have a slight chance of getting the special rare Shadow Daggers, in one of the 13 available finishes.
To open the Shadow Case you will need to have a Shadow Case Key in your Steam inventory. You can buy the key in the game store, or you can trade for it with other players on the Steam community market.
When you open the case released in this update, you have a chance to receive one of the following skins:
The 16 weapon skins from this container make up The Shadow Collection, the set that counts in trade-up contracts. The knives it drops as rare special items belong to no collection.