Mi Daemon Mihi Labora meaning is My Devil Work for Me translated from Latin. These words were previously chanted in Episode 2 also.
In the latest episode, Rowan chants the spell during a ritual. As she is willing to do anything to get rid of Lasher, she visits Cortland to find possible ways to transfer her designee status.
Cortland then tells her about one previous successful transfer – from Catherine Mayfair to Julien, her twin brother. He further shares that the process is complex and Lasher must accept the new designee.
He then calls his cousin, Dolly Jean, for more detail about the process. She agrees to help after noting that she found the transference ritual in Julien’s diary.
Jean prepares for the method at the Mayfair home, which will need all the Mayfair women to come together.
She also warns Rowan that getting rid of Lasher may mean getting rid of her powers, including her medical intuition.
She then takes Rowan to Julien’s workshop. There they find a doll made of her ancestors’ teeth, bones, and hair. With Dolly reading the spell and asking the ancestors to help transfer Lasher, all women in the circle kiss the doll and pass it around.
Also, Rowan has to chant the spell “Mi Daemon, ad me veni. Mi Daemon, mihi labora. Mi Daemon, me libera” (My demon, come to me. My demon, work for me. My demon, free me). She has to chant it with all her heart.