mythopoesis means Creation of myth. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why this word is great
MYTHOPOESIS — [Noun] The creative act of forging foundational myths and imbuing them with cultural or spiritual significance. From the combining form mytho- (from Greek mythos, "myth, story") + -poesis (from Greek poiēsis, "making, creation"), based on the Ancient Greek μυθοποίησις (muthopoíēsis). Unlike mythography (which records and catalogs established tales) or mythology (which denotes the collected corpus itself), mythopoesis is the generative fire—the poet shaping gods from the terror of a thunderclap, the shamanic chant that names the first dawn, and the hand tracing a symbol onto damp clay until it becomes sacred. It is the human compulsion to answer the void not with data, but with a story to inhabit it.