In the Fief of Iinpo Colapatiam ruled by a Confederacy, a character must undergo a Trial by combat.
He has been framed by A magic item - sword, relic, wondrous item - and if found guilty of Treason, his punishment will be Flesh to Stone. Perfect for filling an art gallery or museum. Under careful watch of security to prevent an ally from casting Stone to Flesh, prisoners can be put on display as an example to all, or kept in a private collection for the warden to gloat over or decorate as he sees fit.

Fief - Land or office granted to a vassal. Ownership is technically still with the granting lord, but revenue and production is given to the vassal. The lord technically retained the right to seize the land in case of disloyalty.
Confederacy - A union of persons, parties, or states; a league.
Trial by combat - Fight to the death, winner is innocent