The Shroudbreaker Gems
Following the leads from scrying Briggy's Skull, pirates re-discover several of the Shroudbreaker Gems.
One is found through Tasha the Tavernkeeper of The Unicorn on Ancient Spire Outpost, by following stories she was told by Captain Briggsy as a child.
The star-gazer Sudds holds the clues to another, as he tells stories passed down from Ancient times based on the star constellations, giving access to a special spyglass only he and Briggsy ever used.
Salty leads pirates down the path of the Trickster to another gem. The Trickster was a pirate who created various traps and mechanisms, and was ordered by Briggsy to use their cunning to protect a Shroudbreaker Gem.