Let's talk about religion in ye olden fantasy settings, /tg/.
It makes me sad it plays such a small role in the politics of many peoples worlds, but let's talk about settings in which religion has a meaningful effect on the game world, other than magic powers.
Like most religions in fantasy have very important function yet somehow they don't leverage this as an advantage to get ahead in politics. They are the go-to place for removing undead and for healing wounds, mundane or serious. Yet they are usually just independent temples with no effects on the community, other than healing potion stores, which is horseshit.
In the setting I am currently running, I made a similar sibling of Europe geographically and resource wise, it is where the game takes place, but with DnD biology and the presence of magic, divine or arcane or otherwise.
Most of europe is ruled by dragons, who started conquering the human and giants inhabiting it when they were small tribes and city states, and use these states as a means to accomplish their goals above all. However, the kingdom of the southern sea, which was called Calidria, had an uprising against their dragon overlord lead by a general named George. George himself put the final blow in the dragon with his spear, and being the first man to do that was thought to be a descendant of a celestial. Soon the kingdom of Georgia ruled by George was proclaimed and the belief of his servants that he was a celestial solidified his claim of godhood in the eyes of the people. During his rule he liberated three more kingdoms from their dragon overlords and absorbed two of them into his domain, relatively without resistance since his rule was much more kindly.
Eventually he did ascend and became the god of justice and law, and in the eyes of his followers a godking who ruled over the other gods, who served him more as angels and servants. This is however just belief.
His religion, Georgianism, is every bit a political movement as it is a religion, as humanoids who practiced it inside dragon lands showed active defiance to their overlords with the worship of the dragonslayer god, and actively fought for freedom from their dragon masters.
The dragons had to adapt with Georges rise to lordship and later rise to godhood by actually being less malevolent in their rule, as the people quickly would turn to Georgianism as salvation.
Even the kingdoms of the metallic good aligned dragons had to adopt somewhat, even if it was simply superficial, simply to not risk revolts.
Most of the dragons either project themselves as beings of worship or allow a select few gods inside their nation that suit their interests, and usually allow up to three or four conflicting gods so they keep the humanoids infighting on a religious basis to keep them from fighting their draconic overlords.
They also usually allow gods that conflict with other nations gods, to keep a healthy hatred for other dragon kingdoms, further dividing them in case they get fed up and decide to overthrow their masters.
how does religion work in your setting, /tg/? I want to hear your stories, I am genuinely interested.
pic related. The striped one is the church of George and the red-orange one is a dragon cult.