So I've been trying lots of 0-dog combinations and thought this would be interesting. With 1.92 attacks per second I'm almost sacrificing 4 dogs every second. At 20% DPS buff per second up to 30 seconds I figured I could turn my 75k unbuffed dps into something on the order of 900k paper dps (150k 5 stacks GF/SH * 600% from 30 seconds of sacrifice). Unfortunately the tool tip is inaccurate compared to what really happens. This stupid rune caps out at 20% -- 4 friggin dogs and does not stack from sac to sac.
Anybody else ever try this and get different results? Has Bliz ever stated this is working as intended?