Alone they are weak, everyone and everything could kill them easily.
BUT together they are able to kill every 25 HC boss in less than one second!
I talk about Golem's...ANIMA GOLEM'S!
Since 5.2 came out and i red about dark animus and his minions i had only one question in my head:
"How much DPS would 25 golem's do when they are all linked to each other?"
Now months later i finally raised my warlock alt to lvl 90 (i hate leveling) and together with a nice talent called "Dark Bargain",
i was ready to get hit so hard that even chuck norris would be jealous (i hope he won't read this).
The Highlights of that "testing" are in the video below.
The dmg was even so high it easily busted the max values in the 32bit system blizz uses.
When it passes 2^31-1= 2147483647 it starts again at 0 or it even goes to negative. Meaning that Dark Bargain can even heal you^^.
Warcraftlogs: http://www.warcraftlogs.com/reports/BxMq2YgmKPzXcrTL