Ok i knew this for awhile now I've been having fun with this - people in shattrath asked me: "Wtf how do u do that?", and all that stuff..... So here im gona share this with you guys. I found it on my OWN so i dont really care if anyone else posted it before , which i doubt. Anyways here we go:
You gotta be lvl 65+ better if you are 70 lvl . Go to Nargrand and Kite a guard of opposite faction to Shattrath. As soon as you get to Shattrath you will notice that guards there are RED to you! Now if you keep kiting the NPC from nagrand you can kill any Shattrath guard! I havent tried to do it in group but if you get a 5man team you probably can kill every since guard in Shattrath lol. Attention! Guards going to fight you back! I hope you have fun and enjoy this ! =D
nerf incoming