I haven't played arena in cataclyms yet, but what I can tell you is that experience is more important then anything. Because every game is different.

http://www.dual-boxing.com/showthrea...781#post282781

is a great one.

There's also some good info in the threads I linked here:
http://www.dual-boxing.com/showpost....89&postcount=8

There's a lot of info to find on the board here, it's just a bit chaotic. maybe. sometimes.