The upcoming reworked mastery for Unholy Death knights ( Dreadblade/shadow damage ) is not currently buffing the 2nd half portion of Scourge strike, which deals shadow damage. Previous posts about how Scourge strike should work insists that it indeed should benefit from such factors. I'm hoping this is just a bug because now that Dual Wield Unholy is no longer viable ( which was the main culprit behind unholy dps meter padding ) 2handed unholy pve dps would not be in a good position if dreadblade was intended to not work with Scourge strike.
The Shadow portion of Scourge Strike is intended to be affected by Dreadblade (this was part of the intent behind changing Unholy mastery); however, there's a bug on the PTR right now that's preventing this from happening correctly. It should be resolved soon, or may already be resolved in the next PTR build.
