http://www.worldofwarcraft.com/patchnotes/test-realm-patchnotes.html
this patch is huge and will take a while to read. All around i have no complaints about it. Matter a fact, i'm really looking forward to a few things like the pets automatically getting unsummoned when you mount and resummoned when you dismount and the cooldown rings for dots.
However my question concerns this.
Dark Pact: This ability is now unuseable while the mana and health of a pet are being adjusted by pet scaling.
For whatever reason i'm just not comprehending what pet scaling means right now. If anyone can clarify this i'd be grateful.