While playing Baldur's Gate 3, chances are that players will come across some pretty unexplainable and difficult to understand items. Whether players stumble upon the many different Soul Coins in the game or find the Adamantine Forge and aren't sure how to work it, there's a lot to discover.One item that can be found in the Gryforge area of Act 1 is the Devilfoil Mask . These masks can be worn by anyone and offer the player a unique buff, only known as the Infernal Legion buff. Here's a breakdown of what this effect does.