Forgive me for the misleading topic, but I couldn't resist such a wordplay.
This thread has very little to do with factions, but the topic's name serves to show how two things may create a very different third party.
Anyways, fiction.
Fiction in Planescape has mostly centered around various tall-tales and rumors. Many of them center around the planes and Her Cerenity.
Books, especially novels, are very rare since a hardworking berk hasn't got the money nor the time to read. Or that's how I got it. After all, since there aren't any massive printing presses (except the one in Sigil) books have to be copied by hand. A long process.
But then it all changed, right? It turned into the Urban Planescape. Suddenly they got factories. They DID have printing presses. Just like we do back here in Earth.
Lots of books on several topics and lots of novels as well. But so what? What's the big deal? What harm could possibly a fictional tale do in planes of belief and imagination, if it's taken into the hearts of thousands/millions of youths? I know, rethorical question.
Now I'm asking you, is it possible? Can the pen suddenly turn million times stronger than the sword, or does the natural cynical attitude of the 20th century protect us from people's imagination?
After all, if you would fall in love with a novel character (in worst case, think of the film Misery by Stephen King), what's stopping you from going to the right plane, gathering folks and start imagining. Start BELIEVING!
And as we know, belief can be really dangerous.
OK, that's a possibility, but not a massive danger. A single character, no big deal. What if a planar version of the Lord of the Rings comes and captures the imaginations of several generations? Could an entire plane/Crystal Sphere be born out of a book?
It might sound a tad silly, maybe even moronic, but I think that would be one of the things that might separate Urban from standard, if it's worked upon. What do you think?
"Why do the slaadi look like a combination of man and FOG, you ask? Because of a damned typing error done by one of the translators, that's why!"
Its a valid concern. What worries me is this: what is a hero without a villian? I mean, a bunch of comic nerds dreaming Superman in existance is fine by me, but if my neighborhood gets blown up because the Big Blue Boyscout gets into a scuffle with Doomsday on my plane, whos going to pay for it?