Forge Oracle
Drop in your Valheim character file, or just type your character name, and see your upcoming Forge of Potential results before you spend an idol. Everything runs in your browser. Your file is never uploaded.
1 · Character file (optional)
No save file, for example on console? Skip this step and type your character name below.
Forge slots found in your save
2 · What are you upgrading?
Enter the level your item is now. Names are case sensitive. Use the internal name, not the display name. Not sure of the name? Browse item names and IDs.
3 · Your upcoming results
Each column is the next unused result on that step. The first item to reach a step uses the 1st result, the next item to reach it uses the 2nd, and so on. A step that no earlier item has reached is still on its 1st result.
Find a starting name (experimental)
For a brand-new character, the first roll for an item and level comes from the character name. This searches for names whose first rolls succeed several levels in a row for the item and level entered above. It only helps a character that has never tried that item at those levels. Not yet tested in game. The new character also has to craft one of the item before it can upgrade it.
Tap a name to enter it above and see its upcoming results. Check the game accepts the name when you create the character.
Item names and IDs
Tap an item to fill in the name above. IDs are case sensitive. Source: valheim.tools.
How this works
Each item and target level has its own list of results. The list is fixed in advance by a starting seed, which comes from the character name, the item and the level. Every attempt on that step uses the next unused result, whether it succeeds or fails, and the game saves its place in the character file. Reloading cannot change a result, so the next ones can be read ahead of time.
An upgrade succeeds when the roll is 0.65 or less, and a failure destroys the item. That value comes from the game data as read by Melichor's ValheimSaveParser, and it fits all 26 attempts we recorded on Valheim 1.0.20: 14 hammer attempts, and 12 on three copies of the same chest.
The list belongs to the item type and level, not to one copy. A second copy of the same item uses the next unused result on each step the first copy reached, and the 1st result on steps it did not reach. Use "Results to show" to see the 2nd and 3rd results side by side. Rows after the first assume every earlier step succeeded, because a failure breaks the item.
With a save loaded, the page reads each step's place from the file, so quit to the main menu after any attempt, because the game only writes seeds when it saves. Without a save, for example on console, every step starts from the character name, so enter how many attempts the character has already made on each step. The name has to match exactly, including capitals. This has been tested on PC saves only.
A prediction missed, or something looks wrong? Email forge.oracle.support@gmail.com with the save from before the attempt (and after it, if you can) and what happened.