Satyrs spawn in Twisted Weald. They are bards so they peace, provoke and discord you if you attack them. The trick is to attack them, wait to be discorded (but not peaced and provoked) then exit the dungeon (to break aggression) and re-enter (before disco wears off).
Then you follow the satyr casting/crafting/decoding. The advantage is that being discorded you can gain using lower level spells (or crafting lower level items and alike) which usually cost less mana - use less resources or more common ones.