When people think of “AHS: Coven,” they likely think of two things — witches and voodoo. The latter is thanks not only to Queenie’s impressive human voodoo doll power, but also the undeniable powers of Marie Laveau (Bassett), the Voodoo Queen. Laveau is arguably the smartest character in “AHS: Coven” due to her extensive knowledge of voodoo magic, her proficiency at working with allies to reach her goals, and her drive to accomplish whatever she sets out to do.
Marie Laveau’s intelligence is also apparent since she’s managed to live undetected by the non-magical world for hundreds of years. She was originally alive in the 19th century before she received the gift of immortality, and thus lived through so many events that could’ve easily led to her exposure. She knows when and where to allow her powers to show themselves, and her intelligence has kept her safe while allowing her the freedom to do what she needs to do.
When it comes to “AHS: Coven,” there are tons of smart characters, though their human weaknesses, impulsivity, and lack of life experience make for some unintelligent choices. Therefore, Laveau stands out as the smartest character out of the group — and the best witch in “AHS: Coven.”