Lately I've been reading Demon in Fodlan by Mundatorem and got the idea of: what would happen if a bunch of Sevants got dumped in Fodlan?

I came with this idea and tested it in my head using Fate/Stay Night, Zero, and Apocrypha characters.

At first, I thought it would be a power fantasy, crack, or fix-it. But the more I thought, the more I realized: it would be chaotic.

Fire Emblem in general has many characters who have feats on par with Servants. Endgame units basically are Servant level, and you have many enemy units in game that can harm them. They even have weapons that are basically Noble Phantasms.

Servants derive power from legend, but also Gaia and the Root. This means that certain skills and Noble Phantasms are buffed, nerfed, or disabled. EMIYA would benefit as his projections would cost less, Artoria doesn't because Excalibur relies on Gaia and the root for power (wishes of humanity doesn't mean anything in Fodlan since in only works on Fate/Earth), and Gilgamesh is comically crippled, since he needs the root to use his eyes (how else will clairvoyance work), and Gate of Babylon gets its treasure from the the root of human wisdom (which isn't applicable in Fodlan) so no Gates for him. Even Jeanne d'Arc would be missing Magic Resistance since she has no protection by God against magic (since this is Fodlan).

The Servants have no master, directive, or common goal.

Siegfried would be viewed with suspicion by the Nabateans, and Edelgard as well as the Agarthans may try to exploit him to kill Rhea.

Gilles de Rais would fit in with the Agarthans, or at least he would be a willing collaborator.

Jack the Ripper would be trying to find a mommy and leave a trail of bodies while Information Erasure would mean she remained undetected. The Agarthans may even try to arrange a "mommy" to control her.

The Hassans would probably be hired by Hubert and the Agarthans.

Karna would be employed and loyal to the first lord to take him in and hire him.

Iskandar would probably figure out that without Gaias influence, even can unleash his entire army without unleashing his Reality Marble, sincw he can only being out one normally.

If anyone can create a story with this premise, it would be awesome. I don't know enough about either franchise to make it work unfortunately. I would like to see what anyone can come up with. You don't have to use all my ideas. Just the premise.

edit: this is assuming Nasuverse and Fire Emblemverses are completely separated. this is all assuming Servants are disconnected from Gaia and the Root, and are compatible with local magic and dont shrivel up like a prune in Death Valley do to lacking Nasuverse Magical Energy which shouldn't be compatible with ANY magic system outside Nasuverse. Come with any system you feel like works best. i still dont think Gilgamesh can see into different timelines though outside Nasuverse.