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World of Warcraft Item Upgrades The upgrade feature for items allows players to upgrade their existing equipment. This can be done at any upgrader NPC. Upgrades boost the stats of an item and add additional features based on the type of item. Examples include Whistan's shield for FB Sorcs or Goldwraps for build casters. Armour Armour is one of the key things that keeps Link safe from harm in most situations. While it isn't able to be upgraded like weapons, it is possible to enhance its defence cap