Frosty datura

[Moonunit]

Frosty Datura is used in both poison making and the expert level shadowrise armor (Iksar monk and BST). Postings I have found say that it drops off Yeti indreadlands. While it is true that the yeti it drops off of are in Dreadlands, I have found that it is often found on the yeti that spawns in the tunnel betwen the main part of the zone and the hidden valley. I killed ~30 yeti in the main part of the zone and got none at all. The tunnel yeti drops a pair of them about 50% of the time. respawn time for the tunnel yeti is ~15 minutes. A note of caution, when the yeti runs (at ~20% health) they will walk into and then through the ice walls of the tunnel. If this happens they regen their health at a much reduced rate. I waited it out once and found it took over an hoour for the yeti to go from 4% to full, only then will he reappear.

[Verdandi]

Updated. I didn't go into quite that much detail, but noted that they can run and get stuck. I would definitely /bug that if I were you. Make sure you're standing near it and have it targeted to give the specific location and npc information to help the bug fixers.