My favorite as well. I'm a sucker for foil cards, and the color scheme and design for this deck are just perfect. I'm hoping they sometime offer something extra with this deck, like with the contraband book lamp.
I don't know exactly, but I’ve only played two years in a row and I got a deck of Piracy this year. To be honest, I think it’s pretty rare but I’m spinning every day, and your chances of winning anything are zero if you forget to spin. Stick to it, the worst that’ll happen is that you’ll accumulate enough points to spend on a physical product eventually.
I'm going to guess that if you have physical 11 of Spades cards, you can still enter them, since the page where you enter the code is still active as of a few minutes ago when I checked. It's only the page where you request the daily free entry that has gone dark.
I could be wrong - I don't have any unused 11 of Spades to try out that guess, so don't shoot the messenger if it doesn't work