The Nidhogg is a Mark in Final Fantasy XII and the fifth mark to be listed in the Clan Primer. It is arguably the toughest Rank I Mark in the game. The hunt becomes available after Vaan has masqueraded as Basch in Skycity of Bhujerba, and the party has been given permission to enter Marquis Ondore's estate. Nidhogg is found in the Transitway 1 area of the Lhusu Mines, and the petitioner is conveniently located right at the mines' entrance.