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In Harry Potter, what's the Dark Mark and what does it signify?
How was the Dark Mark created?
In the Harry Potter universe, the Dark Mark was created using a spell cast by Voldemort himself. It is said to be a combination of dark magic and a spell Voldemort created himself, and it requires a witch or wizard to perform it with great skill and power. Once created, the mark cannot be removed easily and serves as a permanent symbol of the bearer's allegiance to Voldemort.