Sound the call of alarm and light the fires in the trenches, the time for war is upon you!
My Queen should be pleased that Aurixia cannot grant me an heir, for if my dragon could give me a child I would have no use for the woman or her dubious charms…
Attributed to King Thyr, from the Book of the Black Rose
A kingdom where, if there are multiple princes (princesses can't rule unless they have no siblings), the princes fight to the death in the arena to decide who gets to rule. A simple way to make sure your brother cannot make a bid for the thrown, and keeps the royal blood in one line.