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Extreme Arcanum (エクストリームアルカナム Ekusutorīmu Arukanamu, lit. "Extreme Arcanum") is a special attack from Kingdom Hearts Unchained χ.
Kingdom Hearts Unchained χ / Union χ[edit | edit source]
Extreme Arcanum is a single target special attack used by the Key Art #18 and The World Ends with You Art 3 medals.