Doomlord Kazzak was recently nerfed to no longer give players the dying debuff, so you can aggro him infinitely without waiting 15 minutes.. here's how to exploit:
Get nekkid and on your epic flyer (is a req.) and aggro kazzak, then slowly, without getting too far ahead but staying out of cast range, run from Kazzak and pull him onto unsuspecting horde and alliance. Let the fun commence. It'll be an all-out war.
Rinse. Repeat.
Also if you get opposing faction members to get the debuff that heals your attacker, then you can go over and attack them, and it'll heal YOU for 25,000 hp. You cant die.