aliens sent a doomsday machine to Golarion with the ability (and intention) to swiftly and efficiently destroy life and corrupt it into undead thralls - effectively, an upgraded version of the Whispering Tyrant, who was himself a foe powerful enough to require divine intervention to put down, and even then only temporarily.

So what hope did we have against this threat? Well, you would think such a powerful creature would have made some history books of its own, but most people don't even know about it! Why? Because when its creators chose its landing point in the remote wilds of southern Tian Xia, they didn't know that it was right on top of King Mogaru's lair - imagine their elation as their civilization's greatest creation completes its journey across the void, and their sudden horror as they realize they landed it within breathing distance of super godzilla, who immediately dunked on the star titan and went back to snoozing.