The Dravanians

[Nalien]

But the Exarch's future looked so bleak, I feel like this would call the dragons to action because they themselves would be threatened.

IDK, I imagine they'd just escape to the one place that hasn't been corrupted by Black Rose; Space! If you didn't read that as Tim Curry putting on a glorious Russian accent, we can't be friends. Sorry.

But yeah, they do have a history of "Welp, this planet is doomed, lets fly around space for a bit".