There seem to be some interest in these sort of things, so I thought I would share this.
While doing my Molten Front dailies, I came across this.
You probably have to have unlocked the Shadow Wardens, or you might not be able to see these mobs.
It was during the quest "Solar Core Destruction" I decided to take on all the mobs there; "Druid of the Flames". When the last one dies,
two more respawn. So it will spawn two more everytime the last one dies.
So I guess somone could have use for this for AFK grinding with a macro or something? Have not tested gold/hour or
exp/hour, but I guess I could if people would want that.
Screenshots: