If you're unfamiliar with Duelyst its basically a hybrid between a card game and a turn-based strategy, though the emphasis is most definitely on the CCG aspects of gameplay. And since this is a card game we're talking about there is no better thing than a whole bunch of new cards, which is why I'm glad to say that Duelyst will be getting its third expansion Ancient Bonds on March 15th.
Ancient Bonds will bring with it 39 new cards to toy around with, a new keyword by the name of Bond, as well as a lot of synergies with previous cards. If you're interested in a sneak peak at some of these upcoming cards you'll find all of the currently announced ones over at the official website.
As is tradition for Duelyst you will be able to unlock all of new cards in a fairly simple manner. Each card pack you buy will give you three copies of three different cards (so 9 in total), rather than five completely random ones. And best of all, once you've acquired a certain card you will never be able to see it in your pack again! So if you want to buy the entire set all you'll need to do is purchase 13 packs for $20 or 3900 gold. Its still slightly pricey, depending on your perspective anyway, but its also much cheaper than pretty much any other card game out there.
If you're interested in giving Duelyst and its Ancient Bonds expansion a try you can find everything you need to know over at Steam. Enjoy!