I think you're on the right path. Keep in mind that Billy inherited his mother's powers and is an extremely powerful witch in his own right. In the future, he succeeds Dr. Strange as Sorcerer Supreme. To that end, Billy can hear the thoughts of his loved ones when they experience a strong emotion. He ABSOLUTELY heard Wanda and Vision's thoughts as they tucked him and Tommy into bed. He was aware of what was going to happen and, while he may not have been actively casting a spell, his magic kicked in to find him another vessel to swap his current body in order to survive longer. Think of it akin to child Wanda's Probability Hex to stop the Stark bomb from going off. At that age, she didn't know the concept of probability let alone know how to cast a Probability Hex. Even so, her magic sensed her fear and, more importantly, sensed her need and desire to stop the bomb from detonating. From those emotions, it acted to help her achieve that goal in whatever way that it could thus ensuring her survival to one day become the Scarlet Witch. There's no reason to think Billy's magic wouldn't operate in the same way.
What a great show and great reaction ❤
Lilia just forgot about placing the sigil because a sigil also works on the witch who casts it so the moment she put it in his jacket she forgot
I think you're on the right path. Keep in mind that Billy inherited his mother's powers and is an extremely powerful witch in his own right. In the future, he succeeds Dr. Strange as Sorcerer Supreme.
To that end, Billy can hear the thoughts of his loved ones when they experience a strong emotion. He ABSOLUTELY heard Wanda and Vision's thoughts as they tucked him and Tommy into bed. He was aware of what was going to happen and, while he may not have been actively casting a spell, his magic kicked in to find him another vessel to swap his current body in order to survive longer.
Think of it akin to child Wanda's Probability Hex to stop the Stark bomb from going off. At that age, she didn't know the concept of probability let alone know how to cast a Probability Hex. Even so, her magic sensed her fear and, more importantly, sensed her need and desire to stop the bomb from detonating. From those emotions, it acted to help her achieve that goal in whatever way that it could thus ensuring her survival to one day become the Scarlet Witch.
There's no reason to think Billy's magic wouldn't operate in the same way.