Will-o'-the-Wisp
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https://en.wikipedia.org/wiki/Will-o%27-the-wisp The term "will-o'-the-wisp" comes from "wisp", a bundle of sticks or paper sometimes used as a torch, and the name "Will", thus meaning "Will of the torch". The term jack-o'-lantern (Jack of the lantern) origin...
For: Mythical Creatures 2019 contest