According to wowhead these are sub 1% drop rates to get the new enchanting recipes to make shadowflame crests.
Why can’t these be sold on a vendor? They want people to endlessly farm the same mobs for a ~1% chance at getting the drop.
I have enchanting and alchemy. I tried the new zone after about 2 hours of trying to farm these I was like yea its not worth it. Now if I want to upgrade crafted gear I am going to have to pay some guy like 50k to do a crafting order just to get the item to upgrade and pay another guy 50k to craft the item.
A similar thing happened to me last patch i never got the ultimate potion recipe in the raid and I ran heroic like 16 times, i never seen it drop and if it dropped I would of still had to of won the roll vs a lot of people.