Baš Čelik

When the third glass is handed to him, Čelik regains his massive strength, breaks the chains, opens his wings, and flies away with the youngest son's wife.

The young prince refuses to listen, so each Lord gives him a magical feather that when burned will summon their armies.

At this point the prince's wife learns that Čelik cannot be killed, because his life is in a bird that is in a heart of fox in a forest of a high mountain.

[2] The tale was also collected by British author Elodie Lawton Mijatović and translated as Bash-Chalek, or, True Steel.

[5] In a recenzija (review) of a reedition of Vuk Karadžić's book of Serbian folk tales, Croatian folklorist Maja Bošković-Stulli also classified the tale as a combination of types: AaTh 552A + 304 ("The Dangerous Night-Watch") + 302 ("Ogre's Soul in the Egg").

[6] Professor Andreas Johns described Serbian Bash Tchelik as a "close relative" of East Slavic character Koschei, the sorcerer, since, in the course of the story, both are released from prison by the hero, kidnap the hero's wife and hide their soul (heart, or weakness) outside his body.