I want to know more about the circumstances that led to the 1st, 2nd, 3rd, and 5th Calamities, both the geopolitical situation on the Source and the ultimate trigger for those respective Rejoinings. I recall a scan of one of the EE books having a brief overview of the 2nd & 3rd Calamities, but it felt like there's an untold stories even there. The second umbral calamity intrigues me, since I keep wondering what could have released the massive volcanic ash clouds that from which came the great lightning storm(s) that Rejoined the Twelfth shard into the Source. And of course, there's simply no data on the 1st and 5th calamities at all (or even the preceding Astral Eras).