Dumpster Diving

Built this for a possible derringer format, where you can have only one copy of each card. But the larger concept is something I've been kicking around for a while. Can you turn the discard pile into an extension of your hand?

Turns out yes. There's a lot of discard diving tech in the deck. If you change this from a derringer style deck to a more standard deck, I believe there's probably a working deck in here.