In the Caliphate of Camiret ruled by a Technocracy, 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 Counterfeiting, his punishment will be Symbol of Death. Cast Permanency, place the symbol so its 60 foot radius crosses the only entrance. Cast Curse on the prisoner to lower their saving throw. This still gives the prisoner a chance at a saving throw, so you will want to target those with naturally poor Fortitude, and this is better as a deterrent than a cell because the desperate will take their unknown-but-poor chances of surviving, sometimes. Substitute other Symbols to create other defenses in the prison.

Caliphate - A land area taken care of by the caliph, who is elected through local leaders as in a republic. The caliph is bound by the laws and not above them.
Technocracy - Technocracy (bureaucratic), a governmental or organizational system where decision makers are selected based upon how highly skilled and qualified they are, rather than how much political capital they hold. A form of government in which scientists and technical experts are in control; "technocracy is described as that society in which those who govern justify themselves by appeal to technical experts who justify themselves by appeal to scientific forms of knowledge"
Trial by combat - Fight to the death, winner is innocent