well extended art cards are fun for collecting, especially that most are either won or given away at special events.

explain how they are different from the regular versions....explain how they are different

http://www.livejournal.com/users/jc47/2604.html

It's all right there for you.

They are for collectors. Some shops are still selling them for ~ $50.

nice,how do you get these?

I got Wolvie at GenCon Indy for winning True Heroes & the other at the WoS pre-release tourney.

Not to perpetuate a rumor, but I saw a binder with extended art Nightcralwer Kurt Wagner, Astroid M, Danger Room, and a bunch of others. The guy claims they were pulled out of DC packs; same box...