The Gorgon's Downfall Crate only appears in the Crate Store when you have Gorgon Crate Tokens. If you don't have any Tokens currently, the Crate will not appear.
The Gorgon's Downfall Crate expires periodically, whereupon it is refreshed with new prizes. Your Gorgon Crate Tokens will not expire, and can be kept for later use.
The Gorgon's Downfall Crate expires periodically, whereupon it is refreshed with new prizes. Your Gorgon Crate Tokens will not expire, and can be kept for later use.