This item is dropped off monsters
From the 12.05.08 Grab Bag:
Q. Hello there. I been trying to get a Dorawm bracer of blight which is supposed to drop from the encounter of Ring of Unyielding Will. I been farming this guy a dozen times and he never drops anything, not even some random objects. Is there a bug with this mob?
A. The Lady of the Jewels remembered answering a similar question of March this year: This bracer is indeed dropped by Dorawm of the Ring of Unyielding Will encounter. As far as why he is not dropping any loot for this player; from a Previous Grab Bag found at http://www.camelotherald.com/news/news_article.php?storyid=3488:
"All Master Level and artifact encounter monsters will now only drop their normal loot again if someone in the group killing them needs credit for the encounter. If no one in the group needs credit, they will drop nothing of significance. This does not include Celestius.
New encounters have been added which will drop random loot taken from the Master Level and artifact encounters. As well, players can turn in essences that drop from these encounters for a roll on a specific master level or artifact encounter loot table."
Further information on these new encounters can be found here in the version 1.89 Release Notes in the Trials of Atlantis section: http://www.camelotherald.com/news/news_article.php?storyid=3076