Sadly if you try this at any time of day that isn't 4am there's far too many people farming this.
You farm the Blasted Lands mobs in the north. Namely boars, basilisks, vultures, and scorpions for their parts which raiders use for buffs and everyone uses for libram enchants.
This guy explains it pretty damn good.
Just /who blasted lands and when there's only 2-4 people in the entire zone on your faction just go farm it.