Unlock Location:
- Progress into The Fadefields region to the Idolator's Noose.
- Complete the Order Bunker Tipping Point.
- Doing so unlocks Mimicron, the boss that drops
Complex Root.
Farm Method:
- Defeat Mimicron after completing the Order Bunker.
- Return to the arena if you’ve already killed him once.
- Use the Encore Machine to respawn him for repeated farming.
- Farm until Complex Root drops.