Apprentice Atra:
The Mucrokians stimulate the contamination of this region. And for that reason, they must be exterminated.
Hunt down Mucrokian Fanatics, Mucrokian Ascetics, Mucrokian Saviors, Mucrokian Preachers and Awakened Mucrokians. Tear off the hide of each one you kill. Amidst their ranks you will also find Contaminated Mucrokians. For each of these that you kill, you will be able to salvage two hides.
Collect as many as you can, and return to me. If you've brought enough, I will exchange them for Dynasty accessory recipes.