Since it appears that Humans with creative imagination can change the passage of a story in a Faerie Realm, how far can they change it?
Maybe I have overdosed on the anime "Saga of Tanya the Evil, but I keep envisioning a quasi-WWI battlefield with trench-warfare, hundreds of thousands of faeries combatants, including Goblin infantry, Elf cavalry, Giant artillary, Ogre tanks, Dwarven sappers, and many others on each side, with skybourne witches dog-fighting when they aren't dropping magical firepower on the enemy side.
The commanders of each side are a couple of Magi (either Tremere of Tytalus) that are testing various theories of magical warfare, and the battles and slaughter just keep escalating. Presumably it started off as two faerie lords fielding a chivalrous army against each other.