I absorbed five souls, a given... then I threw on provoke the pack (pretty much the same level I got it), and I noticed that the damage did indeed increase, but that there was no visual indication for the buff whatsoever. Is this a bug...? Is it intended to be this way? It's a 30 second buff to your damage, and I was trying to see a few things about how this skill works, and didn't feel like taking notes and writing down all sorts of numbers in order to do so. (eventually I will end up doing this if the buff is intended to be invisible)
How many times can this stack? Potentially infinitely or whatever? You sac 4 dogs if you have zombie handler, and then what happens if you generate more dogs and sac them? I tried another round of 4, and I did NOT see an increase in damage, which bummed me out... but what about other dogs that get summoned randomly from all the different skills that allow this to happen?
Does the overall effect reset the 30 seconds of the buff if another dog is sacrificed? I am REALLY interested in this spell, but I don't see ever using it if the information about the skill is cloudy and unclear. When my five souls is NOT on my buff bar I look down for a second and notice a certain emptiness, and that reminds me to run up and collect a few more souls so I don't puss out on my damage output.