Lex Talionis

Lex Talionis, or Law of Retaliation, is a practice among some Adepts of using various forms of dueling to settle disputes or personal conflicts. Lex Talionis is an old practice, predating the Teachings of Gamaliel by thousands of years. 
The Lex Talionis is a divisive issue among the Adepts, with most of them either in favor of it or completely against it. The Military Orders are probably the biggest supporters of its use, and their versions of Lex Talionis are also the most brutal. The Ecclesiastical Orders despise it utterly, with the Order of Disciples particularly resentful of its use. 
Most versions of Lex Talionis involve some controlled form of trial by combat. Combatants will agree to meet at a designated place at a prescribed time to fight. Weapons, types of fighting allowed and additional matters are settled by the Adepts before the trial, or by a neutral third party agreed upon by them.