This is Felrage's Vengeance Demon Hunter CD add-on. I have slightly modified it. Unfortunately, I cannot find where I found this WA (thought it was MMO-Champion forums, but no longer seeing a post).
This is a collection of 5 auras:
SS cooldown V (icon)
Torment CD (icon)
FE cooldown V (icon)
Fblade V negative (icon)
FD cooldown (icon)