What is "raskovnik"

The raskovnik or razkovniche ( Serbian Cyrillic and , , pronounced , , ) is a magical herb in Slavic ( Bosnian, Bulgarian, Croatian, Macedonian, Montenegrin, Serbian, Slovene, Russian) and Romanian ( iarba fiarelor) mythology. According to lore, the raskovnik has the magical property to unlock or uncover anything that is locked or closed. However, legends claim it is notoriously difficult to recognize the herb, and reputedly only certain chthonic animals are able to identify it.