Bilviz

A creature from German folklore. 

Variants of the spelling of the names of Bilvises: Belewitte, Bilwis, Bilwiß, Bilwitz, Bilwiz, Bulwechs, Pilbis, Pilbiz, Pilwiz.

They were represented in the guise of men wearing linen clothes and dark brown cocked hats, and sickles grew on the thumbs of their left feet instead of nails. They live in flocks in tree hollows and in fields. They lead a nocturnal lifestyle, only with the onset of evening these creatures come out of their hiding places.

They are accompanied by their spouses, the so-called roggenmeme - "rye aunts", who walk naked, showing their black breasts, from whose nipples poisonous milk oozes.

The creatures ravage fields, tease and harass people, and can even cause paralysis or make a person wander.

To protect yourself from them, before going out into the field, you should throw a knife with three scratches on the handle to the ground and shout: "Hold on, bilviz!" Bilviz will be afraid of the knife and run away.