Magh, God of the Crucible, Patron of Mercenaries
Magh is a transactional God, very harsh but fair and trustworthy in his dealings. He is one of the most active gods, venerated though not necessarily worshiped across the world. All cities and most settlements bear a shrine to him, and in that shrine one may speak with with an Angel of Magh in exchange for a minor blood sacrifice.
An Angel of Magh will offer two options; either a group of mercenaries in exchange for tribute or participation in the Crucible. Those who join the Crucible are whisked away to Maghs world where they await until a group of one thousand volunteers are collected. Once joined, they are subject to brutal training. There is no quitting. There is no washing out. Only the slow, gradual death of nine hundred over the course of their training.
Each death is a sacrifice to Magh, the soul of the prospect burned up. Seven tenths of the power goes to Magh, while the remaining three tenths is distributed amongst the survivors. Over the course of the training the intensity increases, to ensure a constant death rate; to facilitate this, food and water is provided in relation to how much of the training was completed; one who does not exercise may survive for a time, but they will quickly die of thirst.
Once there are only a hundred survivors, the deaths stop and they are put to an examination. Physical, mental, and tactical. The bottom ninety are conscripted into Maghs Hessians, his mercenary troops, for ninety nine years of service. The top ten, meanwhile, are given the choice to join as a volunteer with appropriate compensation or return to the world, empowered by the deaths of their fellows and wielding arms and armor forged by Maghs war smiths.
All graduates of the Crucible (whether former Hessians or those who refused the opportunity) remain connected to Magh, and if they die they are given the chance to enter into Magh's service for ninety nine years to avoid death. If they refuse, they enter the afterlife as normal.
Magh has few priests, and they might better be termed scholars. Magh has few worshipers, for he does not reward or ask for it. Magh has no great holdings across the world. Magh refuses to involve himself in great struggles beyond providing his mercenaries. And yet, the constant willing soul sacrifice of those who die in the Crucible and the massive tributes offered by those seeking his Hessians empower and enrich Magh to the point where he is considered one of the greater gods of the world.