Why isn't there a religion in league? I'm not talking the religions on earth but religion in general. I feel like a lot of interesting stories and interactions could occur between said religion and the shadow isles.
EDIT: MFW I realize my mistake in not looking further into the lore....
Well.. let's see, there's the Solaris and Lunaris who have their own belief system that is an antithesis of the other. Then there's Malzahar's Void Cult, not to mention an implied idea that the ancient city of Icathia might have worshipped the Voidbornes themselves. There's also Elise's cult that lures people to their demise (unless that's been retconned too).
I could be wrong but there's probably more either implied or not fleshed out yet?
There are, but nothing is outlined in great detail.
Riot can't even do characters, how the fuck are they going to tackle entire systems of metaphysics and epistemology?
Soraka was a goddess. I'm sure she had her share of followers before her fall from grace.
I also remember reading that the Ionians practiced ancestral worship.
Sivir is supposedly an atheist. "The only thing I look up to is the sky."
Praise the Moon
well, the items: 
confirm that they believe in a godness (and angels)
And Vilemaw is a pseudo god.
Jarvan IV and Swain have a cult of personality.
Nami's people need a Chosen one to survive. A Tidecaller. Of course the moonstone is to ward off enemies, but the ceremony once it is retrieved from the deep can very well be religious :3
Shen religiously serves the "Equillibrium" like it's a god of some sort.
I'd argue that there is to some degree.
vlad's lore sorta had a religion about a cult that used blood...
Who do Noxians worship? What is their religion.
