https://krogsgaard-boisen.blog....bright.net/how-the-1
The Item Upgrader in World of Warcraft The War Within introduced two gear upgrade currencies: Valorstones and Harbinger Crests. These can be exchanged at the NPCs who upgrade items, Cuzolth and Vaskarn. Each item may be upgraded to its maximum level only once for a slot. Afterward upgrades to the slot will be less expensive. Additionally, the pity system introduced with The War Within lowers extreme variation in the chance to upgrade. Upgrades Upgrades are components