The Wrath of Mytis

The Wrath of Mytis is the name given to a tsunami that struck the Gulf of Luentia. The wave almost entirely submurged a large isthmus that had once joined the countries of Auselii and Corium, destroying settlements and killing thousands. The cause of the natural disaster is unknown, but two main hypothesis have been posed. The first is that it was caused by a catastrophic earthquake out in the depths of the Mauraelian Ocean. However, the resulting tsunami hit other nearby coastlines that are customarily affected by strong, lunar tidal waves. Instead, the main devestation seemed to be targetted at Auselii, Corium and their disputed territory. This has led many to believe that the tsunami was created by the sea god, Mytis, to punish Auselii for submitted its plea to join the Raskvaerii Empire. At the time, the isthmus was largely under their control.
The tsunami occurred on the morning of the 9th in Secondmonth YEAR, which was a traditional religious festival. Worshippers, merchants and performers had gone down to the beaches, habours, and other open spaces on the coastline to participate in the typical rituals and festivities. There was no warning. They were suddenly confronted by a series of four massive waves, which swept away thousands of people and submerged vast swathes of the isthmus.
It is believed that the disputed territory of the isthmus became the focus of Mytis's wrath due to increase Saeric influence in His territory. In particular, Port Turia was famous for providing safe harbour and replenishment to many Saeric ships. The city had begun experiencing a wave of conversion amongst its inhabitants to the Phoenix's foreign pantheon, worshipping these new deities alongside their ancestral gods. However, the Gulf of Luentia is situated in the territory of another pantheon. Known for His jealousy and rage, the sea god, Mytis, would not tolerate sharing His devotees with a foreign pantheon.