DarkYarns
I've been looking for an Art Nouveau-style tarot deck for a long time, but none of those I've found speak to me. I do like the art of the Mucha deck, but the cards don't seem particularly to resonate with the tarot meanings they are meant to represent. Others are a bit cheesy. I'm really excited about this one - I find the style gorgeous and the subjects so far to resonate with the tarot meanings. I'm not affiliated with the creator, just excited and thought others might also be.
http://www.etherealvisionstarot.com/
http://www.etherealvisionstarot.com/