Baldur’s Gate 3has all sorts of secrets that will take players many playthroughs or extensive exploration to discover every single one. In one of the lesser-known areas of Act 1, players can find the Grymforge deep within the Underdark, being a very unique and secluded area of the game.

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The Grymforge is an old Adamantine Forge that has been taken over by the Cult Of The Absolute. While there is already so much players will be focused on while exploring this area, many may come across an object known as the Devilfoil Mask.

Baldur’s Gate Potions Feature

Updated by Peter Hunt Szpytek on June 24, 2025:This guide has been updated to include a video version (featured above.)

Baldur’s Gate 3

Infernal Legion Effect

Those who wear the Devilfoil mask will get the Infernal Legion effect.With only one mask, this will not do anything,as this effect builds with more character is the party also wearing masks. Foreach additional character in the party wearing a Devilfoil Mask, each of their strength will increase by 1,but theirIntelligence, Charisma, and Wisdom will decrease by one.

If all four characters in the party wear a mask,all of their strength will increase by 3,while theirIntelligence, Wisdom, and charisma will decrease by 3.This effect is a double-edged sword andshould only be used on melee and strength-focused characters.As long as strength is the most used stat by the character, this mask does offer some use, as aBarbariandoesn’t need to worry about their Intelligence.

The Devilfoil Mask In The Character’s Inventory

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Where To Find The Devilfoil Masks

There are four Devilfoil masks that can be found throughout the Grymforge, with all four able to be used on your party at once for maximum benefits.

Players can alsogive these masks to Dammon at the Last Light Inn in Act 2to turn them intopowerful explosives while losing the mask.

Baldur’s Gate 3_ 10 Best Cantrips, Ranked split image

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A Devilfoil Mask On The Ground

five spell icons from Baldur’s gate arranged in a circle with a waterfall in the background