Assert Authority [Mirrodin]
Assert Authority [Mirrodin]
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Set: | Mirrodin |
Type: | Instant |
Rarity: | Uncommon |
Cost: | {5}{U}{U} |
Affinity for artifacts (This spell costs {1} 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.