When you're well into Borderlands 3 and taking on endgame challenges like Mayhem Mode, you want every piece of gear in your Vault Hunter's loadout to be fully optimized. There are two vending machines that'll help you assemble the perfect collection of loot for your ultimate build: Crazy Earl's Reroll and Maurice's Black Market Vending Machine.
Crazy Earl's Reroll is a huge boon to Vault Hunters looking to get the most out of their gear. You'll find this machine near Crazy Earl's reclusive residence in the cargo bay of Sanctuary III, right across from the Veteran Rewards vending machine. By spending some of your precious Eridium, Crazy Earl's contraption will replace the existing Anointment on an item.
Anointments are powerful effects attached to some items that can unlock the full potential of your character build. By rerolling the Anointment on your favorite pieces of gear, you can create the most optimized loadout imaginable and become the envy of all your fellow Vault Hunters. But buyer beware: when using Crazy Earl's Reroll, the replacement Anointment you get is entirely up to Crazy Earl, and you can't revert back to your previous Anointment. No take-backsies!
As for Maurice's Black Market Vending Machine, everyone's favorite Saurian is surprisingly tight-lipped on the subject. All we know for certain is that this vending machine offers top-tier Legendary loot and will be hidden in a new location each week (though you won't need to scour any DLC areas as it only appears in zones from the base campaign). It'll be up to the Borderlands community to track down Maurice's Black Market Vending Machine each week and see what he's got!