Black Metal Protection Idol Valheim 1.0.20
Black Metal Protection Idol is a material found in the Mountains biome in Valheim. It is used to craft Vilebone Cage and Vilebone Drapes.
“This mysterious idol is brimming with the potential of the gods. It could grant a powerful boon, or demand a great sacrifice.”
The Black Metal Protection Idol is a material. The game describes it as a mysterious idol "brimming with the potential of the gods" that "could grant a powerful boon, or demand a great sacrifice." It weighs 0.5, stacks up to 20, and can be carried through a teleport.
You use it as a crafting ingredient. It goes into ten items: Vilebone Cage, Vilebone Drapes, Lox Fur Jacket, Lox Fur Trousers, Padded Cuirass, Padded Greaves, Linen Cape, Lox Cape, Vilebone Visage and Lox Fur Hood. That covers several armor pieces and two capes, so it is worth keeping a stack on hand if you plan to make any of them.
Used to craft
Black Metal Shield, 
Black Metal Tower Shield, 
Linen Cape, 
Lox Cape, 
Lox Fur Hood, 
Lox Fur Jacket, 
Lox Fur Trousers, 
Padded Cuirass, 
Padded Greaves, 
Padded Helmet, 
Vilebone Cage, 
Vilebone Drapes, 
Vilebone Visage.
Other material items
Acorns, 
Amber, 
Amber Pearl, 
Ancient Bark, 
Ancient Coin, 
Ancient Metal, 
Ashlands Gourmet Bowl, 
Ashwood, 
Asksvin Bladder, 
Asksvin Hide, 
Asksvin Neck, 
Asksvin Pelvis.