Nirnroot Share definition Flag A special plant in Elder Scrolls IV: Oblivion - it has special fatigue properties. A sound (Much like a bell) appears when you get close to it. I searched Bravil and found a Nirnroot plant. If I find 9 more samples I can make a fatigue potion. Nirnroot by Erik N. April 30, 2006 0 0 Get merch Get the Nirnroot mug. Buy Now — $32.95 See more merch