https://click4r.com/posts/g/18....159079/what-not-to-d
https://www.openlearning.com/u..../licasey-sl3fn6/blog
World of Warcraft - Item Upgrading Upgrades to items allow players to upgrade the power of their weapons, armor and trinkets. The item upgrader NPC requires the appropriate currencies and items. For instance, a weapon that is bound to the default upgrade template for a weapon will increase 3percent in attack damage each time it is upgraded. The percentage value it receives is determined by the stat value. Recyc