1) Волшебная пыль
2) Усыпляет как НПС, так и игроков.
3) Начиная с патча 3.2 не должна усыплять игроков, а на НПС должна работать с шансом не 100% (точной информации по этой вероятности нет).
4) 17.10.2017, кросс-сервер.
5) С момента применения патча 3.2 на серверы логона, полагаю, прошло немало времени.
6) 6/10. Дополнительный контроль в пвп, которого не должно быть.

Собственно, пруфы:

Комментарии с вовхеда - http://www.wowhead.com/item=2091/mag...ents:id=805211

Скрытый текст

PATCH 3.2:
This dust has been nerfed further and now has a 100% chance to Fizzle (not work) as a level 80 character using this against another level 80 player.

Congrats on having a freed up bag slot, all! :(
[свернуть]
http://www.wowhead.com/item=2091/mag...nts:id=1110734

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As a 39, I was able to get the dust to work once out of every 8 or 9 times on a level 7 mob in Dun Morogh. Each time the dust fizzled, it did not get consumed. When the dust finally worked, it did get consumed.

Curious, I then tried to get the dust to work against another 39 in a duel, to no avail.

Basically, the capability of the dust is still there, but remains almost completely inaccessible at this time.
[свернуть]
http://www.wowhead.com/item=2091/mag...ents:id=879483

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This is what happens to all cool items :S Hordes complain to a GM and they "fix" it. Guess its wrong to surprise ppl in PvP now, no matter what u use.
[свернуть]

https://xpoff.com/threads/wsg-consum...e-2#post-35196

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I heard that Magic Dust no longer works in PvP. I thought maybe it was just confusion about it not working in arena, because it is a consumable, but WoWhead comments indicate it was nerfed in 3.2 to fizzle unless used on mobs.
[свернуть]