How to get INSANE Secret BFA pet Baal ( 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.