Aurolio voiced his question and got an answer from Elita.
Corrupted Deities were as simple to explain as they were complicated.
The simple part was that they formed as a result of something going wrong with the Broader Existence of a Divine being.
The complicated part was that a Corrupted Deity did not just spawn from a Deity. Even fresh Divines could become Corrupted Deities. Additionally, there were a nigh countless series of ways the Broader Existence could be tainted, forcing the creation of a Corrupted Deity.
This was why Serenity didn't bother explaining the specifics of Corrupted Deities back when Skullius asked her (following his battle with Caxellac).
But there were two main ways this occurred.
One, was when a Divine failed to extend their Constern – their limited Divine life – causing their Broader Existence to expire. In some circumstances, it didn't just expire, leading to a true death. It got Corrupted instead.
The second most common way was recognised in Deities.
