How to get INSANE Secret BFA pet Baa’l (Possibly part of an even BIGGER Secret)

Reuploaded because I’m a complete and utter melon who got lots of people killed. I’m really sorry, I feel very bad about making such a stupid mistake. This has been a lot of fun, it was discovered while we searched for Hivemind mount in secret finding discord. It’s very likely also a step in discovering the mount /way Zandalar Underwater Cave coords for water.