Plakavac

The Plakavac is a vampiric creature from Slavic myth, specifically in the area of Herzegovina. They’re created when children are strangled to death by their mothers, sometimes due to being illegitimate children, or sometimes just children who died unbaptized. If the Plakavac is formed from an unbaptized child, their village suffers a hailstorm that devastates crops. They take a form roughly the size of a frog and spend their time cursing the mother who killed them after bringing them life.

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.