To redeem in-game, open up the Social menu either from the start while playing and tab over to Shift. Input the code and hit redeem and voila, you've got a Skeleton key. You can collect it from ...

The Baldur's Gate 3 Sarin skeleton puzzle is one you find while ... Not the worst magical effect in the game, and there aren't a ton of great amulets in BG3, limiting its competition, but this ...