There is NOTHING at all like this, I myself found this out by accident and got my T6 chest and the Bow of the Black Betrayer from doing this.
Im trying to get out of leacher and i love this website so here it goes.
1. Say you know you about to kill a boss i.e Illdian.
2. Hearth at about 5%.
3. Que For a VERY quick skirmish make sure its >1 Time.
4. Enter!Quickly!! Make sure you have leader in this.
5. Heres when it gets good.Now you have raid leader.
6. PROFIT TIME! Now is when you kick the assistants and raidleader himself.
7. Go back to the unlooted mob and bam, free lewts for you, grab what you want sell what you dont.