Assert Authority
[Mirrodin ]

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Blue Commander Duel Foil Instant Legacy Mirrodin Modern NonFoil Normal Penny Uncommon Vintage
    Uncommon
    Set: Mirrodin
    Type: Instant
    Cost:
    Affinity for artifacts ( This spell costs less to cast for each artifact you control) Counter target spell.
    If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
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