The Wolf Rune in Baldur's Gate 3 can be obtained by talking to Lars in Kahal's room. After obtaining it, you can use it in Lost. You need to put it in the empty space. You can just light them up in order and use them in the slot.
Answer: You can get the Wolf Rune by talking to Lars in Kahal's room.
After entering the Lost state, place the wolf rune in the empty slot, and then light up the four runes in the order of eagle, deer, wolf, and bear.
Then open a passage at the bottom of the middle stone statue and enter the passage.
After entering, you can get two blue pieces of equipment, Sadness and Summer Robe.
What should I do if the Wolf Rune synthesis fails?