For this trick you must be a warlock with imp with phase shift.
Go to Swamp of Sorrows and find a Lost One Riftseeker (http://www.thottbot.com/?n=19677)
Let your pet get aggro on it, and after it recieves a debuff from the Riftseeker that reads along the lines of "portal guys are tracking in on you" desummon your pet.
When you summon your pet again, the pet will have the debuff, but it and you will be off the aggro list since it is phase shifted.
When the debuff expires after 1 minute, 3 lvl~20 mobs will spawn and aggro anything in their aggro radius thats lower level than you. If there is nothing lower level than you, they will aggro you.
Very useful to gank lvl1-20 people of your own faction.
The adds will die after ~10seconds, so your gank target needs to have little hp.
I used this to kill goldspammers in Ironforge and people I just thought deserved to die
EDIT: Be sure that the Imp is closer to your targer than you are when the debuff expires, else it might get random. I'm not sure. ----(please leave the copyright info below intact)----
This post is copyright by the user posting it and MMOwned.com - World of Warcraft Exploits,Hacks, Bots and Guides, where it was posted. You may not copy or reproduce the above on any other site without written permission from both the poster and MMOwned.com