> Plus you can add and filter by metadata, like card type and properties.

I read through your docs and figure that will be part of the approach.

An idea I had was to find similar, or "next best", cards for replacement in popular decks or to achieve similar effects in order to bring down the cost of EDH, Modern, etc. formats. I'm just getting back into the hobby again, so having a tool like this would make my wife and wallet happy :)