The final step in capturing spren is the most tricky, as you must remove the Stormlight from the gemstone. The specific techniques employed by each artifabrian guild are closely guarded secrets, entrusted only to their most senior members. The easiest method would be to use a larkin—a type of cremling that feasts on Stormlight. That would be wonderful and convenient if the creatures weren’t now almost entirely extinct. The wars in Aimia were in part over these seemingly innocent little creatures. —Lecture on fabrial mechanics presented by Navani Kholin to the coalition of monarchs, Urithiru,
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