Hearthstone lead designer Eric Dodds took the opportunity to write a lengthy article to explain the card balance philosophy and also introduced the new card balance designer Mike Donais, who is experienced in card game design with 10 years hands-on on the field.
Eric described each of the core philosophies involved in card balance — possibly in response to feedback after the recent card changes.

The Core Philosophies that are taken in mind when changing a card is putting the card under the lens and looking whether:
A card causes non-interactive games
A card is frustrating to play against
A card is causing confusion …read more