In Trent bei Mayeri. Ihr benötigt 800 Wissen.

You get it in Trent from Mayeri. You need 800 knowledge.

You can grind thoses mobs at the south of Crioville, the enter is a cavern at the end of the lake :
https://gyazo.com/f3757894e4b62e8f0b2bc44337c3b25a (Map)
https://gyazo.com/c957cb057e5335474e25c15216826f27 (Monster)