While on the road toward the Beast Capital, Uriel explained all the important stuff he needed to know after what he read back in the library.
Notice: After reading the books from the library, there is a gear that is hypothetically better than the Black Ice Set that can be crafted using materials from Repreus. It is supposed to be "hypothetically" better since there are no numerical values written to back it up.
Notice: The Equipment Set's name is called, Dark Viridescence: Shade of the Forest Night. Its components are quite rare but as described in the book, it is one of a kind. Equipment set vested by the Sage Monarch on an Elven Hero, Thalia Flovael, after the Great War.
(Is it really that hard to craft?)
Notice: The materials used are special. It was listed in a book called, The Sage's Journey. I believe it was some sort of a diary explaining what he had been doing a couple of years after the Great War with the Demon Monarch.