WoW Retail, Godmode, Invincible, Invisible (Patreon)

To make this exploit work you need to obtain the quest "Mysteries Of The Maw" from Ve'nari in the Maw.  This quest is near the end of the 9.1 introductory questline that takes you to Korthia. You should not use the option to skip to Korthia in Oribos for any character you wish to use this exploit with,

In the quest you are tasked with clicking on an "Animaflow Teleporter" which temporarily turns you into a flying white orb. If you pre-que the Seething Shore battleground and begin the teleporter flight, and enter Seething Shore you will be un-targetable and invisible to all players. This will persist when you leave the battleground. 

Every mob in the game will now ignore you and you are invisible to other players. You are pacified and cannot attack*, however you can still interact with objects. 

The most obvious application of this trick is to use cap flags in battlegrounds-as you cannot be stopped from doing this since no one can see or attack you. There are many other uses-for example you can gather without any interference from players or mobs dramatically increasing the speed with which you can do this and your gold per hour profits. You can also completely skip any part of a dungeon or raid. 

To switch off Godmode simply log-out and back in.

*You may still use vehicles.

As should go without saying....this is very bannable. Do not draw too much attention to yourself.