She-Ra: Princess of Power (1985)

S1E27 The Eldritch Mist

Castaspella summons the Pool of Vision, pulling Adam across realms into Etheria. Meanwhile, Shadow Weaver cracks open the Eldritch tome, weaving its forbidden incantations to shroud the Whispering Woods in an unending mist of sleep—a spell designed to snuff out all who enter.