Posting this build idea just FOR FUN. Not suggesting it to be the best for arenas (that would be stupid). http://ru.wowhead.com/?talent=sZ0erhf0xZxfrtbhufMsMzh (posting a wowhead link, because MMO calc doesn't show up for some reason).
P.S. I'm a fan of reckoning-fun-build since preBC, and if it is played smart - it can hurt really nice