Quote Originally Posted by Badger View Post
*I'm unaware of any other fates like this, but if there are any they need to be fixed.
In each Primal's "shrine area" is a FATE that pops every now and again that results in a series of boxes or crates that have to be destroyed, and a spawning series of mobs whose death doesn't count for completion. They provide experience. To complete, you must destroy all boxes. However, leaving said boxes up at 2% HP and just farming the mobs is possible.

This is also true of collection quests, where the spawns that can provide turn-in items respawn at a fairly rapid rate depending on the number of attendees. As long as no one turns in until about a minute to go, hundreds of these guys can be spawned and killed for the XP.

It's possible, but for the most part nonviable as these areas are "out of the way" or not high-level enough. Farming XP from a fairly low, early 40s level up towards 50 by doing Dark Designs - the Plea and just nuking these particular mobs over and over again is a possible, and viable method, of XP grinding the slowest leveling period in the growth curve. But there is no actual "exploit," and I suggest you look up the definition of that term and how it's applied to the gaming world.