What If... Doctor Strange Lost His Heart Instead of His Hands? - S1-E4
Plot hole: The episode has wonderful writing from a pure storytelling perspective, however it has zero coherence with the MCU it is supposedly part of. The show was written way before "Loki", for instance, and concepts like "Absolute points" are at odds with it. Likewise, Strange and the Ancient One's powers are radically different (Strange can't foresee the future but can go back at will without rewinding and his mentor can seemingly see past her own death).