In the Diocese of Tinicum Quipria ruled by a Syndicate, 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 Spying, his punishment will be Baleful Polymorph. The prisoner permanently changes into a small animal. One of my favourite D&D modules is Castle Amber. Wouldn’t it be a neat twist for the central garden to be the prison of several banished beings changed into the form of small animals? If the subjects fail their second saving throw, they even gain animal intelligence, in effect becoming just another creature in the garden.

Diocese - Land administered by the church (usually a bishop, whereas an archdiocese is administered by an archbishop)
Syndicate - A trade union where the workers democratically run the system or the manager is elected from amongst the workers.
Trial by combat - Fight to the death, winner is innocent