Disaster: Eclipse of Empires

Nothing lasts.
Adds a new disaster, exclusive to Great Powers that kept this status for 100 years and are not in a Golden Age. Consider this a ‘Boss Disaster’ that effectively adds rise and fall mechanic, making the game more dynamic and perhaps less predictable.
Disaster fires once per game. If you survive, you stood the test of time. If you don’t… well, at least schoolbooks will describe your demise in great detail.