A dragon can live for much longer than you or me, and they are significantly harder to kill. They hold pain in their hearts for ages, and it is just as fresh as it was when it began. So, for peoples who forget and lose knowledge of the truth, the onslaught of dragons over centuries is a terrible, bitter war.

[Ah, she's dropping a lot of terms others aren't going to be familiar with.]

A Primal is the prayers and emotions of a people given the form of a deity. Specifically, the kind of Primals I'm used to are dangerous - once summoned, they exude influence on their followers to focus only on them, to give them tribute, to bring more into the fold. Eventually they drain the land of its very life, if left unchecked. So, following that example, Ilberd decided to make a rage beast out of his followers' anguish. And his own self.