Marvel Television's Agatha All Along | EPISODE 7 PROMO TRAILER | Disney+

After Agatha All Along episode 5, the MCU now has the perfect way to explain a mystery that first arose in 2022's Doctor Strange in the Multiverse of Madness. Following on from the events of WandaVision, Doctor Strange in the Multiverse of Madness marked Wanda Maximoff's transition into a bona fide villain, as she hunted down America Chavez in hopes of stealing her universe-jumping power. This mission led the Scarlet Witch to the Darkhold Castle on Mount Wundagore, where she learned more about her history and mysterious prophecy.

Agatha Harkness first explained the prophecy of the Scarlet Witch in WandaVision's finale, which first introduced the Darkhold to the MCU. The original spells and dark knowledge of the Darkhold were transcribed from the walls of Mount Wundagore, where the demonic Chthon had engraved them. This included detailing the future of the Scarlet Witch, who was destined to either rule or destroy the world. However, Wanda Maximoff's Scarlet Witch wasn't the only subject of Chthon's prophecy, as was revealed in Doctor Strange in the Multiverse of Madness.