Magic: The Gathering
Assert Authority (30)
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| Rarity: | U |
| #: | 30 |
| Creature Type or Sub Type: | Instant |
| Rules Text Contains: | Affinity for artifacts (This spell costs 1 less to play for each artifact you control.)
Counter target spell. If it's countered this way, remove it from the game instead of putting it into its owner's graveyard. |
| Set: | Mirrodin |
| Number: | 30 |