King's Wrath

King's Wrath
King's Haki Advancement, Rare

The sheer force of your kingly spirit is enough to harm those who oppose you.

As an action, you can unleash a burst of spiritual energy. Each creature of your choice within a 20-foot radius centered on you must make a Constitution saving throw against your King's Haki save DC. On a failed save, a creature takes 2d10 psychic damage and is stunned until the end of your next turn. On a successful save, a creature takes half as much damage and isn't stunned. Once you use this feature, you can't use it again until you finish a long rest.