Snape's eyebrows remained raised. "A Voodoo Doll? The magical device Haitian wizards use to control Inferi?"
"Professor Snape, I mean the Voodoo Dolls used in Africa," Wizet explained. "The Voodoo Dolls used by African wizards primarily serve to treat various magical injuries."
"They have a magical concept called Sympathetic Magic. Using it as a foundation, they can give tangible form to the dark magic within someone's body, manifesting it on a Voodoo Doll."
"You think the principle behind Wolfsbane Potion..." At this point, Snape understood Wizet's line of reasoning. "...is similar to that of the Voodoo Dolls used by African wizards?"
Wizet nodded. "Quite a few wizards who have taken Wolfsbane Potion mentioned that... five minutes after taking it, they experience a faint pain."
"Besides that faint pain, they also feel their heartbeat quicken, though it isn't as noticeable as the accelerated heartbeat during Animagus Transformation."
"Animagus..." Snape arched an eyebrow, thinking as he spoke. "Your original inspiration?"
"Yes!" Wizet breathed out softly. "Regardless of where a wizard comes from, when they reach the final step of learning Animagus Transformation, they experience what is called a double heartbeat."
"Starting from that double heartbeat, the specific animal form emerges, along with its animal instincts... so the heartbeat is a very important clue."
Snape shifted the hand supporting his chin. "From the perspective of bloodline magic?"
"Exactly!" Wizet nodded. "In bloodline magic, the heart is an extremely important organ... once an Animagus Transformation is complete, the wizard successfully becomes an animal..."
"From a certain perspective, we could even say that the wizard's bloodline has changed, and they have become an ordinary animal. It is precisely because they have become an ordinary animal that they lose the ability to cast spells."
Snape curled his lip and said coldly, "Just as a Muggle