Using my usual appraisal magic, I can't tell how strong they are. Maybe their world doesn't have classes like Magician or Warrior. Maybe they do have them but they're totally different than my world.
So I changed the formulas in the magic circle to find out where they belonged to. At least once I learned their world, I can easily tell what kind of power they have.
Mera #1. That's what I got. They came from Mera #1. And since it's all of them, I guess the faction is from that world as well.
Now, let's see what kind of power they have.
"Magic Sword! Burn!"
"Magic Spear! Electrocute!"
So they're from a world mainly using powerful magical weapons. That's what I assumed from how the swords suddenly started burning and the spears had their blades releasing some sort of electricity.
But I doubt that's all they are. They must be at least strong enough to be able to use them in a real fight. If they're too weak, then there's no way they could climb the tower and built a faction here.