Corlis
Warlord
One issue is that the One reserved control over time for himself, and not even the gods themselves can alter it in any way. I suppose the One could have pulled a pre-magic Kylorin into the future for some reason, but that's so convoluted that Occam's Razor comes into play: the simplest explanation is probably the correct one. So I'm assuming that Decius is just a bad-ass commander of the Bannor who falls and then (maybe) redeems himself.