This is taking too much time due to the limited availability and various pools I'd need to hunt down, so I'm postponing it to push a release sooner.

Uldum:

• Malignant Gnasher School
• Aberrant Voidfin School
• Others TBD

Vale:

• TBD

Roadmap:

• https://ptr.wowhead.com/item=174456/bottle-of-gloop#comments
  • Testing: Defeat detection
  • Testing: Waypoint creation

Actually, I think the fishing schools are only available during these assaults, so it's easiest to add them and ignore the assault itself.