There is a room in the Iron Outpost with 3 treasure chests.
Two of them are treasure elementals and one is a real treasure chest.
Before trying to open a Treasure Elemental chest, I read the book.
The text tells the story: “The thief or the king?”
When trying to open the chest at the bottom it appeared to be a treasure elemental.
I walk up to the treasure elemental and the battle commences.
After I defeated the treasure elemental, he did not disappear from the dungeon and I found myself in a second battle with the same treasure elemental.
The exact same situation happened when trying to open another treasure elemental in that room.