Nodens' Arc is a secret legendary weapon in Assassin's Creed Valhalla. Youtuber JorRaptor has found a bug to retrieve this Isu bow. It completes the small list of the legendary weapons of Valhalla which are composed of Excalibur, Thor's hammer and Gungnir spear.
Nodens' Arc is in Eurvicsire. On a small of island, located south of the lake, you can find an iron ore that is obviously unbreakable. Follow the instructions and get the bow.
As you can see on the video just above, we did followed JorRaptor's guide, and it worked.
First, hit the ore for a little while. Manually save the game and then reload it. Once back in the game, all you have to do is walk on to the pile of rocks.
Of course, the developers said that it's not the initial solution to get the bow. So beware, a future patch may fix this bug and prevent you from getting the bow this way.
Original content by Camille"Effylia" Bouin.