OCTGN

Right now there is not a way to filter by multiple sets in the deck editor. Many card games have variant play formats where only cards from particular sets are allowed (such as Standard/Type 2 in MTG). As such, people who wish to build decks in these formats have to sort through the entire card database to find the cards.

What I am suggesting is to have the deck editor be able to read simple text files that define these alternate formats, and which sets are legal for them (listed as GUIDs).

In addition to set filter, the text file could include a list of cards (listed by name to include reprints and promos) that are banned from play in a particular format. Cards in this list will not show up in the deck editor, even if they are part of the legal sets for that format.

This text file could be included in the game definition, or it could be imported externally. I think it would be preferred by many to have the file externally imported, so that users can easily edit or make new ones as they choose.