
I feel like Robert Castaigne can breathe new life into this card. Whether you're Tony Morgan or Michael McGlen, you can have it sit in your hand and fire it once per turn as a fast action.
I wouldn't be shocked if Robert ends up with a similar taboo to something like Sleight of Hand, limiting the level of cards he can affect - although if he does, it'll impact the Remington Model 1858 that pretty much feels like it was designed to work with him. That, or a taboo saying "actually no you do have to actually play or discard the card".