The Lizard casters in Temple of Cazic Thule (justicar/judicator/lifedrinker/lifestealer etc) have a fairly good drop rate on this. I camped the throne room area for the clicky levitate shield for maybe 7 to 8 hours , and managed to gather 60-70 powders as a lvl 60 cleric duoing with a 58 SK and 2 mercs , so we were killing at a slow rate (they have a nice amount of hp though...).
Can add a Mangled Clairvoyant to the Greig's End list of mobs. Seems mobs other than those on the above list drop Binding Powder with more frequency than those on the list. Just an observance after hundreds if not thousands of kills in this zone.
This and Simple Binding powder drop off the Frogloks Shammies/Wizzies and Chanters of the Ilis and Krup persuasion in Sebilis and occasionally off the Myconids.
Edited, Apr 26th 2009 1:51pm by Ennis
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Amersham 72 Arcanist <Insidious Blood> Luclin server Ennis 60 Druid <Insidious Blood> Luclin server Zubenelgenubi 63 Magician <Unbathed Mercenaries> Luclin server Shalkasis 63 Necromancer <Unbathed Mercenaries> Luclin server Ammer 70 Wizard <Fires of Heaven> Guk server (retired) Nahanni 70 Fury <Fires of Heaven> Guk server (retired)
I never hunted in any of these zones for exp since I've been back but I managed to scrounge up 43 of the binding powders. My only guess is Bastion of Thunder but not being a hotzone anymore is kind of useless for farming, they are still pretty tough...