The Death of Koschei the Deathless
The Death of Koschei the Deathless or Marya Morevna (Russian: Марья Моревна) is a Russian fairy tale collected by Alexander Afanasyev in Narodnye russkie skazki and included by Andrew Lang in The Red Fairy Book. The character Koschei is an evil immortal man who menaces young women with his magic.
Source: Wikipedia — The Death of Koschei the Deathless (CC BY-SA 4.0)