The episode referred to in your file name is actually , the 15th episode of Season 4. It’s a major turning point for the "Queens of Darkness" arc and a deep dive into the origin of the friendship between Regina and Maleficent. Based on the key events of this episode, Feature: "The Spark of Villainy"
This episode highlights the complex mentor-student dynamic between and Maleficent , showing how two of the show's most iconic villains actually helped one another find their "inner fire". Watch Once Upon a Time S04E15 HDTV XviD-FUM-GTtvSD
In the present day, the "feature" of the episode is Regina's high-stakes undercover mission. She must prove she is still evil to Maleficent, Cruella, and Ursula by kidnapping Pinocchio . The episode referred to in your file name