https://fewpal.com/post/488796...._https-cases-gg-item
The Importance of Upgrades in World of Warcraft Upgrades are new items that boost your stats. These can be used to upgrade armor, trinkets and weapons. To calculate probabilities, item upgrades employ a "upgrade pity". This system is designed to minimize the risk of losing money and offer a safety net when upgrading. Armor The item upgrader lets players improve the level of equipment on their trinkets, armor and weapons. The upgrades are applied to the gear through a vis