Must be Special Summoned by 'Mask Change', and cannot be Special Summoned by other ways. This card gains 500 ATK for each monster your opponent controls. Once per turn, during either player's turn: You can banish 1 'HERO' monster from your Graveyard, then target 1 face-up monster on the field; it loses ATK equal to the banished monster's ATK, until the end of this turn.
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