According to the credits, the Art Team has 12 people on it. I remember way back in Beta when we were talking about the art and one of the artists chimed in saying she was the artist of a particular card in question, but since then I don't know that we've heard anything except from Art Arcana the dirctor.
To topic, the artwork I like would have to be Dragon's Anthem. I just like the subject matter, charging into battle. True to my Warlord nature.
For others, are your pics because of the picture, the style, the detail...what?