A *well-timed* Terro can be useful in the 3 crags, but you have to plan out your timing to make sure that's the case. If you just have someone run in and go "HAY GUYZ I'M GONNA TERRO NAO LAWLZ" it'll likely cause more harm than good, especially where Astral Flow and WS's are concerned.
As Fynlar already mentioned, if 6 Psycho and 6 Hystero alone aren't enough for one of the three crags (Vahzl is different; as already mentioned, Terro is very useful there for dealing with the "next boss"), you've got problems anyway.
Anyway, for details of where to go for what:
Psychoanima - Recollection of Fear:
Wanderer - Holla
Weeper - Mea
Seether - Dem
Hysteroanima - Recollection of Pain
Wanderer - Dem
Weeper - Holla
Seether - Mea
Terroanima - Recollection of Guilt
Wanderer - Mea
Weeper - Dem
Seether - Holla
Regarding Vahzl, I *think* any mob there can drop any recollection (but Vahzl isn't a smart place to *farm* recollections in the first place).
Regarding Thinkers, Cravers, and Gorgers, I've seen the first-floor Thinker in Holla drop both Fear (Wanderer item) and Pain (Weeper item) - not at the same time though, it was on separate kills. So from this I suspect that these three mobs drop either a. all three recollections or b. the recollections corresponding to the local Wanderers and Weepers.
Vilurum - Quetzalcoatl
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