Towards the end of the 20th century, a number of people have begun to describe themselves as elves, usually more of the Tolkien than the folkloric Santa type. Many of these people can be found in the Otherkin subculture.
Elf-shot was the name use for found neolithic flint arrow-heads, imagined as created and used by the elvish folk, and sudden paralysis was sometimes attributed to elf-stroke.What remained of the belief in elves in German folklore was that they were mischievous pranksters that could cause disease to cattle and people, and bring bad dreams to sleepers. The German word for nightmare, Albtraum, means "elf dream". The archaic form Albdruck means "elf pressure"; it was believed that nightmares are a result of an elf sitting on the dreamer's chest.
The term lfsciene ("elf-shining") is used in the Old English poem Judith referring to elven beauty. On the other hand oaf is simply a variant of the word elf, presumably originally referring to a changeling or to someone stupefied by elvish enchantment.
The Harry Potter book series by J. K. Rowling features house-elves that resemble brownies or goblins more than modern high-fantasy elves. Rather like the elves in The Shoemaker & the Elves, Rowling's house-elves are released from servitude when they are given clothes.English folktales of the early modern period typically portray elves as small, elusive people with mischievous personalities (see illustration). They are not evil but might annoy humans or interfere in their affairs. They are sometimes said to be invisible. In this tradition, elves became more or less synonymous with the fairies that originated from native British mythology, for example, the Welsh Ellyll (plural Ellyllon) and Y Dynon Bach Tg.Elf, fairy, and other terms for nature spirits like pwcca, hobgoblin, Robin Goodfellow, the Scots brownie, and so forth are no longer clearly distinguished in popular English folklore, nor are similar terms in other European languages.The elves of Norse mythology have survived into folklore mainly as females. The lvor (Swedish, singular lva) were stunningly beautiful girls who lived in the forest with an elven king. They were long-lived and light-hearted in nature. They could be seen at night dancing over meadows. The circles they left were called lvdanser (elf dances) or lvringar (elf circles). If a human watched their dance, he would discover that even though only a few hours seemed to have passed, many years had passed in the real world. (This time phenomenon is retold in Tolkien's Lord of the Rings when the Fellowship of the Ring discovers that time seems to have run more slowly in elven Lothlrien. It also has a remote parallell in the Irish sdhe).Modern fantasy literature has revived the elves as a race distinct from fairies. Fantasy elves are different from Norse elves, but are more akin to that older mythology and to the Irish sdhe than to folktale elves.Post-Tolkien literary elves (popularized by the Dungeons & Dragons role-playing game) tend to be human-sized or only slightly smaller than humans, and tend also to be capable warriors, especially skilled in archery. Terms like hob or brownie or other genuine regional folklore terms are seldom used of such creatures: they are unlikely to sneak in at night and help a cobbler mend his shoes. The canonical role-playing style elf is Deedlit, a major character of the anime series Record of Lodoss War.Tad Williams's Memory, Sorrow, and Thorn trilogy focuses heavily on a long-lived, fair-skinned, magical race known as the Sithi, which are described as elves in all but name.Tolkien is responsible for reviving the older and less-used terms elves, elven, and elvish rather than Edmund Spenser's invented elfs, elfin, and elfish. He probably preferred the word elf over fairy because elf is of Anglo-Saxon origin while fairy entered English from French.