The King's Boon is granted to a Lighteyes who has preformed an impressive feat before the King of Alethkar. This is occasionally done after a very impressive duel. The limit of what can be granted is unknown however it has been used in recent history to force a political opponent into a duel to the death.
- Torol Sadeas used it to force Highprince Yenev, who opposed Gavilar Kholin, to a dual to the death allowing them to replace that Highprince with one that was willing to be cooperative.
- Adolin Kholin attempted to use the king's boon to force Torol Sadeas into a duel however Torol Sadeas escaped while the King Elhokar had Kaladin arrested.
- Kaladin After coming to Adolin's rescue asked for a duel with Amaram, because Kaladin was a darkeyes the king had him arrested for slander.
Presumably the custom of the king's boon comes from the Sunmaker's Reign as all Highprinces supposedly descended from his line and he was the only other person to unite Alethkar since the fall of the Silver Kingdoms besides Gavilar Kholin.