|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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Incarcifors is a Transforming spell that transfigures an object into a suitable prison for a nearby creature, allowing it to capture or imprison the victim.
The prefix "incarci-" probably comes from the English "To incarcerate" and the suffix "-fors" (often used in transfiguration spells) is Latin for "chance, luck, fortune", though it may also come from "forma" (or simply English form) meaning form.