This author modified a Quranic term for revelations called “amthal” for a concept of limit testing. Lesley Blanch’s book The Sabres of Paradise inspired this author’s usage of Caucasian customs such as a double-bladed knife called a kindjal. Car repair manual company Chilton Books published this author, who named (15[1])a fictional event after “Darwin Among the Machines” author (15[1])Samuel (*) Butler. This author created a series of creatures after watching maggots eat away at (10[1])psychedelic mushrooms. This author was inspired by environmental stabilization projects in an Oregon national park to depict the terraforming efforts of Indigenous people called Fremen (10[1])(“FREH-men”). Oil is analogized to a resource called (10[1])“spice” in a 1965 novel by this author set on the planet of Arrakis. For 10 points, name this author of Dune. ■END■