Koschei's death

In the eleventh episode the dwarf Arzt tells the party that a chest under a seal skin, which only disguises its powerful odor, holds a hare, with a duck in the hare NA E11·01:52:37. When Ylfa asks whether this is Koschei the Deathless, Arzt answers that he is very dangerous NA E11·01:52:55 NA E11·01:53:07. Arzt says the Tsar is sending Koschei against them, a knight who cannot die, and that the dwarfs have gone to the island where his death is chained NA E11·01:53:12. He tells the story of a knight in Snowhold who sealed his death in a needle, put the needle in an egg, the egg in a duck, the duck in a hare and the hare in the chest NA E11·01:53:58.

In the eleventh episode Arzt says Her Highness intends to release the thing in the chest when Koschei rides over the hill the next morning NA E11·01:53:44. In the twelfth episode Brennan's recap says the party journeyed with dwarves carrying a chest with the death of the knight Koschei, who will fight on the side of the Tsar of Snowhold NA E12·00:03:05. Arzt tells Snow White the dwarves have retrieved Koschei's death, they believe, and the sealskin comes off a massive old chest of rotting wood with a grotesque smell NA E12·00:21:27 NA E12·00:21:36. Snow White puts a hand on it, casts magic and says, "You have found it true" NA E12·00:22:15 NA E12·00:22:22.

Snow White says that the Tsar will come with Koschei the Deathless at the head of his knights to cut down her army of dwarves, and that the chest makes it "quite effortless for him to die" NA E12·00:33:34 NA E12·00:33:13. In the thirteenth episode Brennan's recap says the party left Snow White and her army of spectral dwarves to face the Tsar and his champion Koschei NA E13·00:05:40.