Monsieur RedPhoenixxx wrote:
VE (and the healing that results from it) causes extra threat. In fights where only the tank takes dmg, it is quite useless to have VE up, since all it does is create healing threat on top of the dmg threat. So, if you have aggro problems, and most well-geared shadow priests tend to, tell them to only use VE when the group the shadow priest is in takes AOE dmg.
If only the tank is taking damage, then VE isn't causing any extra threat as no one in the group is needing heals :D
I know what you mean though, which is why in the spell priority discussion I list VE as one of the first things you want to take out of your rotation if you have threat issues.
Most fights I don't even use it. My raid leader was going to suggest putting me in the melee dps group for Void Reaver to heal them with VE, but he came to his senses when I laughed at him :)