в вашем браузере.
you gain 25 Expulsom from scrapping these
Short version: These are worthless by design.
These require Dreadful Void Focus to craft. That means you will need a total of 220 Shred of Insanity before you can create them:
20 shreds to complete Maintaining Focus
200 shreds to complete Dream Catcher
The distribution of shreds is a joke, and the only one laughing is blizzard. You get:
LFR drops 1 / wing
Normal drops 1 / boss
Heroic drops 10 / boss
Mythic drops 20 / boss
And of course, if you're running anything above Normal you won't need this gear anyway, as the drops are better than this in the first place. There are also PvP drops. With the exception of Epic Battlegrounds (which drops 2 shreds/win), they all drop 1 shred/win (i.e. nothing if you lose). There is also a chance for shred drops from HKs, but it's so rare it is hardly worth even mentioning.
In short, assuming you're full-clearing Normal every week, and never raid above that (solo players pug'ing are more common than you think), and aren't into the whole pvp mandate inexplicably intertwined into non pvp storylines, you're going to be doing this for three months to craft one piece of gear that you wouldn't need anyway if you were raiding one level higher (i.e. Heroic, which you will be doing anyway in a far shorter time period than three months unless you have absolutely no skills whatsoever).
is wowhead missing something, or these have no green stats?