I don't see this posted anywhere and it didin't tell me so here it goes
If you can't beat a boss or need to kill something without getting hurt then I suggest you use this bug ok first go to Gurubashi Arena or STV (Whichever doesen't matter) then go to Booty Bay talk to the ship master then go to the reputation tap set Booty Bay to "At War" status attack one of the guards and let them kill you then when your a ghost make a macro that says this /logout
/console then go to the pier wait for the ship get on it and use the macro now log back in and congrats you are invulnerable have fun ^_^