The Reformistas are a group of young radicals within the Orthodox Church of Mithras at Haven Towne. It was created during a supernatural event the Reformista call "The Coming of the Lightbringer".
They follow a doctrine that the Church has been abusing its power for the personal gain of the priesthood and lost its humility and focus on helping the poor and downtrodden of society.
After a period of attempted reconciliation with the Orthodox Church, the Reformista formerly left the Orthodox church in August, IY1245. The next day they were formally excommunicated.