Religion in Arcadia is principally a dualism between 2 forces, neither wholly good nor evil: The Sun God, who is the god of civilization, war, and healing, and The Earth God, who is the god of nature, selfishness, and survival. These two are ends of a spectrum that somewhat aligns with Law and Chaos.
The Sun God is the patron deity of Arcadia and some of the north. He can be summoned physically, but at great expense of gold and jewels, and will refuse to speak to anyone but one of the highest ranks of his church. He is summoned once every 19 years to sit at the head of a grand feast of the highest echelons of his church, where they can beseech him for intervention and beg for a new spell to be granted in recognition of some great deed.
When physically present, he takes the form of a giant man made of reflective gold, with a serpentine or draconic head. His order views toiling and sacrificing to construct something larger than yourself as the highest virtue. To display the power of not needing everything for survival, demonstrating that you can afford to spend and sacrifice expensively is central to his worship. Nobles finance gold and bejeweled idols for his churches to gain favor, and peasants give whatever they can as indulgences. For those who have fallen out of his favor, sometimes for unknown or esoteric reasons, it is not unknown for a demand to come that they demonstrate they can and are willing to sacrifice more: a member of their community, usually someone important like a noble, leader, or heir. The traditional way is via wicker man, but heart-cut-out isn't uncommon.Still, it's not all bad, for all of the greed and cruelty of nobility he embodies, he also embodies the protections of living in a civilization. Not all of those indulgences go to gilding random things in the church; his order contains the largest bastions of knowledge and aid for the poor, and the most common use of his favor is healing and medicine. His virtues also include protection of the weak, and as many donate money to helping others in society as to displaying the riches of it.The Earth God is the main deity of the druids who previously controlled Arcadia. He can be summoned to the physical world much more easily, and there is generally at least one, usually many, druid conclaves that summon him each year. Making him behave himself once summoned, however, can be a problem. A typical druid summoning conclave will have a circular 'wall' of a bonfire to contain him (as a bestial creature, he greatly fears fire) and a feast laid out within the inner circle to distract him and keep him from turning on the summoners trapped inside the circle with him. Once summoned, he takes the form of a desiccated body or bog mummy of variable size, though when he is much larger than a man he generally remains crouched or crawls. He will speak to anyone present, not just those who summoned him, and can be downright chatty. Druids tend to take what he says with a grain of salt. Unlike the magisterium of the Sun God, druids do not look up to the earth god as a leader. He is powerful but less intelligent than them and their relationship is transactional, like an ox that plows a field because it is fed. The ox may be stronger than the farmer, but it is not the one in control.