HearthStone in the browser?

  (Edited: )

Hey guys! I've really been getting into HearthStone and I recently got the idea of making a HearthStone-like browser game. Following artillery's posts and progress about multiplayer games in the browser I'm really pumped to try and give it a go.

Of course I won't have access to the amazing soundtrack, voices and artwork present (and even if I did, I wouldn't use it because of copyright claims), but I was wondering if anyone knows if simply mimicking the gameplay style (with original characters/artwork/sound) is in any way considered law-breaking in some fashion?

If so, does anyone know how I can contact blizzard (by some method that's actually being read :) ) to see where to draw the line, if at all possible?