Unlock Location:
- start from the Fast travel station in the Stoneblood forest area.
- You will find a Auger Mine up north, where you will encounter the boss Bramblesong.
Farm Method:
- Defeat Bramblesong at the end of the Auger mine "Bittervein".
- Use the Encore Machine nearby to reset the fight.
- Repeatedly defeat Bramblesong until
Boomslang drops.