In the Margraviate of Oto ruled by a Monarchy, a character must undergo a Trial by combat.
He has been framed by A collusion of guilds - uses resource control for leverage - and if found guilty of Embezzlement, his punishment will be Feeblemind. The prisoner not only gets reduced to animal-level intelligence, he is also barely conscious.

Margraviate - A borderland ruled by the margrave who has military responsibilities. Usually larger than normal counties due occassional expansions at the borders.
Monarchy - A monarchy is a form of government in which a monarch, usually a single person, is the head of state. In most monarchies, the monarch holds their position for life and passes the responsibilities and power of the position to their children or family when they die.
Trial by combat - Fight to the death, winner is innocent