The horizon case was released as a part of a regular update for CS GO on 3rd of August 2018. The case released in this update contains 17 weapon skins for CS GO, with a chance to open one of the 4 special rare knife skins. Each of the knife skins released in the horizon case can also be opened in one of the 13 different finishes.
To open the weapon case released as a part of this update you will need a horizon case key. You can buy it in the Steam store, trade for it on the Steam community market or buy it from one of the trading bots.
When you open the horizon case, you can get one of these skins:
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