Francesco Goya obviously had witch-sight. Over on Roles, Rules, and Rolls , Roger the GS was describing a particular novel's depiction of elves, dwarves, and other faerie whazits, and said this: They are normally invisible except to those humans who have been granted "witch-sight" through sorcery. However, their deeds sometimes manifest as omens, portents and misfortune for humans. (As an aside, this would be a great campaign rationale. Ever wonder why the king with his retinue of knights can't go after those goblins threatening the village? They need the adventurers, witch-sighted all, to actually see the goblins.) Aw, man. Wouldn't be a gorgeous bit of color for, say, Beyond the Wall? Or any folkloric campaign? Everybody knows that there are beasties lurking about, and blame them for everything that goes wrong. Sometimes they're even correct. Everyone has a story about seeing a sprite when they were a child, or a kelpie in the swimming hole, ...