Fir Brooms, or Vanya's Adventures in Bast Shoes and a Sarafan

Grandmother Yaga waited three hundred years for this day. And then one black night, when three stars rose in the sky, the crow cawed three times, and three winds met, a miracle happened in the cabbage field. Since then, Yaga's life turned upside down. Who is Vanya and why has Yaga become kinder? And then there’s the hut on chicken legs that laid an egg, not just any egg, but a magical one! Something started in the forest... What will Vodianoy, Leshy, Kikimora, and Zmey Gorynych do to get the egg? And what connects Baba Yaga with Koschei the Deathless?