What to do with · Valheim 1.0.17
What to do with Black Marble Battle Idol
This mysterious idol is brimming with the potential of the gods. It could grant a powerful boon, or demand a great sacrifice.
It's an idol: the Forge of Potential spends one to take 16 items past their normal max level.
Stacks to 20Weight 0.5Full Black Marble Battle Idol page →
Forge of Potential
One idol per try takes an item past its normal max level. The odds and the average cost
Last resort: the Obliterator
Obliteratorturns any 10 items (stacks counted one by one) into 1 
Coal; the rest is lost.
Incinerator.Incinerate in the game code.
Where to get more Black Marble Battle Idol
Questions
›What is Black Marble Battle Idol used for in Valheim?
It's an idol: the Forge of Potential spends one to take 16 items past their normal max level.
›Can you sell Black Marble Battle Idol in Valheim?
No. Traders only buy items with a trade value, and Black Marble Battle Idol has none. The 9 that do: Amber, Amber Pearl, Ancient Coin, Draumyx, Grimvarn, Solryth, Veydris, Ruby and Silver Necklace.
›Can Black Marble Battle Idol go through a portal?
Yes, Black Marble Battle Idol can be carried through a portal.
›Where do you get Black Marble Battle Idol?
Ancient Pot, Goblin trashpile, Morgenhole pile. Every source is on the Black Marble Battle Idol page.
Source: recipes, building pieces, stations, altars, traders and the Obliterator in the files of Valheim 1.0.17 (2026-10-05), prefab Upgrader5Weapon.