Duelyst has been updated with a large patch that brings some neat new cosmetic items into the game including new emotes, profile icons, and card backs. Every cosmetic in this update can be purchased for real world cash or crafted with Spirit. Anyone who registered prior to this particular update will get "Base General Emotes" as thanks for their participation.
The patch also brings Mystery Crates into Duelyst that can also contain cosmetics. Crates are awarded for winning a match and come in three tiers. Crates are locked and require keys to open that can be purchased for cash or earned vial Hidden Achievements.
Check out the full details on the Duelyst site.