- Killer Whale
- Enhanced Petri's philter (1 Required)
- Superior Petri's philter (4 Required)
- Superior Elementa Oil
- Alghoul Decoction
This is an ingredient found at the bottom of rivers and lakes. Fast travel to Woesong Bridge (by your stash spot) and get in the river. Swim to the Northwest along the river hitting your medallion periodically. You will find a few chests then come across the Buckthorn about when you get close to the little random shack with a dock.
- If depleted there, it can be found in the lake to the north.
- Alternatively, it can be found on the sea bed near the Coast of Wrecks.