Nightmare Hide(Izix)

Nightmare Hide

A cut of leather from a nightmare’s flank, tanned to perfection. The grayish black coloration conceals a powerful resistance to magic, making it effective for crafting anti-magic gear. However, the same property prevents it from being defensively enchanted.

Crafting Material

Reference
Acquired in Chapter 78 "Loot! Glorious, Nightmarish loot"