Last year, given the scarcity of Black Lotus spawns, Blizzard put in a hotfix:
What was noted was that “…population and social factors have led to Black Lotus being much more scarce than it was in original WoW.”
I’m bringing this up her because Terocones and Mana Thistle are becoming incredibly difficult to farm on a consistent basis. Terocones are actually rare because of the way they spawn around Terokkar Forest. I should mention that, yes, sometimes you can also find them in Shadowmoon Valley.
In reality the “forest” area of Terokkar is actually quite small in comparison to how much space Auchindoun takes up. Because of this, Terocones have a very limited space to spawn and so makes them far more “rare” to find.
In addition, Mana Thistle is even more limited to the point that I predict future phases will see seeing scores of players riding flying mounts over Barrier Hills, Socrethar’s Seat, Skettis, Twilight Ridge, and Netherwing Ledge.