The card backs in Hearthstone were always among my favorite things to work on. They were also one of the very first things a new artist on the team would tackle as even a single card back provided immediate insight into the design sense, surface treatment, proportions, color and lighting in the game as a whole. There were always specific foundational design beats to hit consistently across every card in the game, but once these were addressed it was an amazing opportunity for each artist to express themselves within the game.