The Crystal Poweder drops from most mobs around Nagrand. But you need to dedicate some time to it. During my questing in Nagraand I picked up enough for maybe 4 tokens.
Quest
Oshu'gun Crystal Powder
A World of Warcraft quest in Nagrand. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
I would definitely try to collect the 160 powder samples needed to get the Halaani Bag. It's much cheaper than any other 18 slot bag you will find. It's going to take you a while to get all that collected, but worth it in the end, I think. Other than that item, I don't see much use in the Halaa stuff for PvE. Even for PvP, you'll get better gear from Battlegrounds.
Please note, the INITIAL quest counts for Nagrand Slam. The repeatable one does not.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(10074))
Description
This base was the primary draenei research facility for the study of naaru crystals. What we have discovered is a veritable goldmine of research notes about the crystals from the "diamond" mountain, Oshu'gun. It would seem that everything in this region carries with it some residual powder of the Oshu'gun crystals. If you find any powder while adventuring in this region, return it to me and I shall reward you with a token of my appreciation which you may use to make purchases from the quartermaster.
Community notes from Wowhead · 22 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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Reward details
Items you receive
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.