Party chases fleeing drones into the Mechanar and wakes a 12-foot guardian

“The party fought off four robotic eels and drone escorts, pursuing them through a sealed iris into an underwater metal facility called the Mechanar, where they explored labs, an office with blueprints for the Great Warden and Reclamation Engine, and a ritual chamber full of corpses before a 12-foot armored construct dropped from the ceiling and declared them an unauthorized presence.”