Military action
Taking advantage of the chaos caused by the Penance/Cognance conflict and the Reckoning's machinations in Requiem, King Aurum of Sigil launched a surprise attack on both Penance and Cognance after convincing both sides the other intended to attack Borne.
With both armies deployed, it was a sweeping victory on both fronts. Under Sigil's banner, Requiem's three great cities were united for the first time in centuries, beginning the Second Haedian Empire under the rulership of Now Emperor Aurum.