40% threat reduction?Follow

Just a quick question-

do the threat reduction effects from the master demonologist imp buff and blessing of salvation stack? If they do (it does sound too good to be true) i may drop my affliction build in favour of it until my guild tank is better equipped.

Thanks for replies in advance :)

all threat reductions stack (including tranquil totem and BoS). and as said, it's not additive, it's multiplative (whatever the word is)

20% from MD
30% from BoS
20% from totem
10% from imp.drain soul
10% from destructive reach
2% from subtlety enchant.

with the few you're asking about

0.8*0.7 = 0.56 = 44% threat reduction. for all who're interested. the latest possbility passive threat reduction is:

.8*.7*.8*.9 (only once presuming you get both talents so all spells affected)*.98 = 0.395 = 60.5% threat reduction (imba ^^)