World of Warcraft Upgrades and item upgrade Upgrading
Upgrades can boost the value of armors, weapons and rings. Upgrades also boost bonuses like Crit chance and PvE Damage.
For instance, a weapon with the upgrade items template ending in % will gain 3% attack damage every time it upgrades (relative to its previous value).
Item upgrading costs crests and the item's current level. The cost increases with the item upgrader mod's level.
Components
upgrade item components are items that can be put into armor, weapons, and trinkets in order to provide a stat bonus or extra impact while they're being used. These can be obtained by crafting, purchasing from vendors, trading with other players or looting. Certain upgrades also come with specific cosmetic effects.
Upgrade components can be inserted into equipment with a slot for them; the item must be at least upgraded to the blue level for a component to be applied.
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