The September 23 Unholy DK hotfix resolved an issue where Blightfall dealt less damage the more time passed since the plague was applied. It landed one day after a tuning pass that increased Blightfall to deal 200% of the plague damage remaining, up from 100%, outside PvP combat. Together, the two changes restore the Blightfall build rather than handing you a new rotation to learn.<\/p>\n
The hotfix is a bug fix, not a tuning pass. Blightfall was scaling down as the plague aged, so the longer your disease sat on a target, the less the payoff hit for. That is now resolved.<\/p>\n
The September 22 change is the damage half of the story. Blightfall went from dealing 100% of the plague damage remaining to 200%. That increase does not apply to PvP combat.<\/p>\n
Read the two together and the picture is simple: the buff raised Blightfall's ceiling, and the fix stopped the ability from quietly losing value the longer a fight ran.<\/p>\n
No source lists a talent change tied to this fix. What the September 22 notes do say is the intent behind the numbers: Unholy Death Knight damage output in raid is being increased, and in parallel the Blightfall build is being brought back to where it was before the bug fixes that made it no longer viable.<\/p>\n
That framing matters for how you read your tree. The developers describe this as a restoration of a build, not a redesign of one. If you moved away from Blightfall because it stopped performing, the stated goal is to make that path worth taking again.<\/p>\n
The same September 22 notes address San'layn separately. The stated aim is to push the San'layn hero talent tree toward being a more viable option for Unholy Death Knights in PvP.<\/p>\n
Keep that in its own box. The Blightfall change is explicitly excluded from PvP combat, while the San'layn note is explicitly about PvP. They are two different conversations.<\/p>\n
Yes, if you had written Blightfall off. The September 22 buff doubles the ability's plague-damage scaling outside PvP, and the September 23 fix removes the decay that was suppressing it. Any sim or spreadsheet you ran before those two dates was modelling a Blightfall that no longer exists.<\/p>\n
Re-run your single-target and raid profiles with Blightfall in the build. The developers' own stated target is Unholy raid damage and a Blightfall build restored to its pre-bug-fix state, so that is the comparison worth testing.<\/p>\n
The September 22 and September 23 entries list no trinket changes, no opener changes, and no rotation priority changes for Unholy. Nothing in the hotfix text tells you to reorder your opener or swap gear.<\/p>\n
Treat this as a numbers patch. Your buttons stay where they are; what changes is how hard Blightfall hits and how reliably it holds that damage across a long encounter.<\/p>\n