In the storyline of Magic: The Gathering, planeswalkers are among the most powerful beings in the multiverse.
[The MtG planeswalker's symbol] seems to refer to the different paths or planes that a planeswalker can choose to walk. Specifically: five choices, as in the five colors of Magic. On the other hand, Mark Rosewater has said that it also has a “five becoming one” aspect, to match Magic's ethos of the colors working together. The latter could also mean there is a connection to the Lorwyn Five or the Gatewatch.
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