Hi, no offence but the images you provided are quite poor. I think you havent put much time in looking for some images - so im going to help you. I like to make a banner that is different - that contains different images then anyone elses. The sheild image is fine i can work with that with the text or something and the human mage is ok apart from the border above her head - she would need to be cut out -if you really wanted me to use her.
I want you to have a look at this site >
http://bestgamewallpapers.com/world-of-warcraft
...maybe that has changed your mind on a few images
also if you cannot decide which ones to user, I can blend 4 - 5 of them pics together if you wish
Also if you wanted images for BC and WotLK they are under a different section > on that site.