Sarah Paulson revealed that after they were done filming, she 'stole' the painting of Myrtle Snow from the set and it now hangs in her home.
When Myrtle says she expected fire and ice, not witches and warlocks, this is likely a reference to the poem Fire and Ice by Robert Frost wich addresses ways in which the world could meet its end.
This episode features the most characters from "Coven" of any other episode of the season.