Originally Posted by ttocs
That post is actually old, some of the mechanics are different.
Frost Aura used to give Armor instead of Health (in Frost Presence). That's what they're referring to.
It's also worth mentioning that Unholy Blight is no longer considered a disease and hasn't been for some time, so Unholy gets one bonus disease, not two.
Thanks for clearing that up, I had a feeling that was probably the case.