|Fatui Mirror Maiden
In Game Description
A prism that can bend light. In the darkness, these prisms can spread thin light into a wider area. Perhaps this is due to this quirk that these prisms can grant a measure of peace to those whose hearts are oft shrouded in darkness.
Usage: Weapon Ascension
2 weapons using Polarizing Prism as for ascension:
Polarizing Prism Farming Locations
Polarizing Prism can be obtained by defeating Fatui Mirror Maiden. You can also get Polarizing Prism by transmuting 3x Crystal Prism in alchemy table.
Here’s all 12 locations of Mirror Maiden for Polarizing Prism farming:
Grand Narukami Island
In location number 1, Mirror Maiden will be accompanied by Fatui Pyro Agent. In next location, after done with number 2 you can just walk downstairs and you will find Mirror Maiden number 3.
Small island near Inazuma City
Tatarasuna and Nazuchi Beach
Take a note that Mirror Maiden in Tatarasuna area will always accompanied by other Fatui type enemies, whether it’s Cicin Mages or Skirmishers.
For first to second location, head to teleport waypoint then glide down to first location. Defeat them quickly and swim to second location.
As for third location, you will only find Cryo Cicin Mages at first. Mirror Maiden and the other Fatui will appear after you engage her.
Aside from these 3 locations, if you are lucky you will get “defeat Fatui Mirror Maiden” daily quest in Higi village.