The moment you completed the Diablo 4 prologue and were set free in the city of Kyovashad, if you're the type of player that's prone to explore, chances are you ran into the Purveyor of Curiosities, a shady-looking vendor that seemingly sells very simple items in a different purple currency.
Diablo 4: Purveyor Of Curiosities, Explained
If you've run into Purveyor Of Curiosities vendors in Diablo 4 but never figured out how they work, then this guide is for you.