Iron Crown
From Mistipedia
The Iron Crown was Azalin's preferred regalia of his station within Darkon. The device functioned as a helm of comprehending languages and reading magic. It was lost during the Requiem and it is presumed to be in the possession of Death. Azalin would like it retrieved and appears in public bearing an illusionary version of the device. .
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. The author of the Raiment of Clarity self-identifies as 'the Iron Crown', suggesting that said author is in fact Azalin.
Data from the Ravenloft Catalogue