Actually the Grimoire card implies that the Traveler, or "Great Machine," caused the uplift in Fallen culture and gave them their own "Golden Age" [b]OR[/b] arrived during their "Golden Age." However, the Fallen eventually had their own collapse, or "cataclysm," and the Traveler left. Sound familiar? This seems to show that either the Traveler causes species to collapse on purpose (directly or by attracting a force it knows will destroy the species), or is a construct with very minimal intelligence that doesn't realize every species it visits ends up collapsing.