1. Have a friend with a 2+ seat mount and get him to go as far into the building that gives you The Wolf and The Kodo - Quest - World of Warcraft before dismounting.
2. /duel the player you want, then quickly mount up and run into the building.
3. Talk to the NPC, accept the quest then talk to him and click Can you tell me your fable, Shin?
4. Immediately click your friends mount, because you are already in a vehicle it cannot turn you into the wolf, but it still phases you.
5. Get out of the mount and go pwn the person who accepted the duel. You are phased so you can only be attacked by aoe, but you can still see them and attack them
Note: If you leave Durotar you are not phased anymore