I thought I'd start this blog off with a bit of a checklist. Ultimately our job as want-to-be designers is to create a polished card that excites our readers with the possibility of the card. We want our readers to look at the cards and say, "Yes, I want this card in Hearthstone!"
When analyzing cards on /r/customhearthstone, I'll refer to this checklist, often linking and citing it on the sub-reddit. The hope with this article is to encourage other designers to review it, and create better cards as a result.