Like Tiny Tina's Wonderlands Shift codes, Borderlands 3's Shift rewards revolve around different types of key, which are used at a chest in Sanctuary to unlock shiny new guns. It's quite a bit ...
For example, Moze's Iron Bear builds in Borderlands 3 were all the rage when the game launched, and they evolved even further with the release of her new skill tree revolving around Iron Cub.