GDC 2014 Hearthstone: 10 Bits of Design Wisdom Panel Video Available
The Game Developers Conference Vault posted recently the entire panel directed by Eric Dodds last year. This panel goes into the very first designs of Hearthstone and takes us throughout the process of developing the game until how it is now.
There are many images in the slideshow showing card design, hero power, UI, AI, Secrets and more. Worth checking out this GDC 2014 Hearthstone panel video.