In the Caliphate of Petamsedllo ruled by a Coalition, a character must undergo a Trial by combat.
He has been framed by A cult or brotherhood - bound by a mission and code - and if found guilty of Terrorism, his punishment will be Trap the Soul. Put the prisoner into a gem. Break the gem when the sentence finishes. Note the gem must have a value based on how powerful the prisoner is, but the type and shape of the gem remains up to you. Perhaps those glowing red gems in the horned demon statue’s eyes have more than just good market value….

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.
Coalition - A coalition government, in a parliamentary system, is a government composed of a coalition of parties. A coalition of parties is also an electoral fusion. The union of different political parties or groups for a particular purpose, usually for a limited time.
Trial by combat - Fight to the death, winner is innocent