Necromancer unique items quick reference (Nightfall)

This is a quick reference to Necromancer unique items from Nightfall, sorted by which attribute is required by the item. For unique items for all campaigns or specific to another campaign, refer to the following lists:
 * All
 * Prophecies
 * Factions
 * Eye of the North

Note: Unique items from Istan do not have perfect stats, and thus are listed separately.