Up to date knowledge says the fey don't have fairy wars, nor do they war on their neighbors. If something is big enough, important enough, two are chosen and they fight until there is a clear winner.
I'm reminded of primer school when I first had the bright idea of 'let the presidents fight each other'. Me and a billion other kids that age. Never caught on at the top though did it? It's far too easy to send faceless young men and women off to do the dirty work, to let them be cannon fodder. It is not possible to have a clear winner in today's world, everyone loses. Except the top people who never fight, never get dirty, never get dead.
"Sincere diplomacy is no more possible than dry water or wooden steel." ~ Joseph Stalin 1879-1953
The cards open previously closed doors to my own heart with their merciless quest for the truth, nothing but the truth. They flay the soul and make me say thank you afterward. Each hour spent with my cards is a new lesson to be learned. Viva la Journey.