Hey guys. I’ve built a chaos/vitality WH that I’m currently pushing through ultimate. I’ve scoured the wiki, but I can figure out which armor pieces I should be seeking out that add both chaos and vitality damage. I’ve heard that there is a “Demonic” set, but I can’t find anything online about it. I’d appreciate any help you guys are willing to give. I’m good on weapons/jewelry, I am specifically looking for armor at this point. Thanks!
Demonic is a rare prefix, not an armor set.
There is no armor that deals both Vitality and Chaos in the legendary armors (looked at chest armor here…), it is one or the other.
The same is true for faction gear (which also is a good choice).
So to get both you need to get the Demonic prefix, ideally on a Bloodsworn Vestment with a matching suffix (e.g. of Solael’s Malice) 
I see. Time to dig. Thanks buddy.
Devil’s Cage chest (legendary) gives -20% phys/chaos/vit debuff and that’s a much bigger damage boost than any % modifier will get you. Get one asap far and away best chest piece for such a build
Chest also has some flat phys damage to be converted and I think the proc does damage too? might just be a debuff not sure
It deals physical damage during the entrapment.