5B-Slavic Folklore: The First Horcrux
As it turns out, Koschei the Deathless is very, very hard to kill, a fact one could probably guess from his name. This episode explores his tragic origins, as well as the ludicrously complex way he's hidden his soul (a Russian nesting doll situation that's unpleasant for everyone involved). He'll prove his name incorrect as he finally meets his demise in what amounts to the most heart-wrenching egging of all time.
In the creature this week, despite forests being kind of the only place where forest fires can take place, this sticky giant thinks nothing of tapping the ashes from his giant cigars into the dry leaves.