Name: Assert Authority
Brand: Magic: The Gathering
Availability: InStock
Author: Greg Hildebrandt

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Card

                  
                  
                  
                  Mana7
                  TypeInstant
                  
                
Assert AuthorityMirrodin

                #30
                Instant
              
TCGplayer
ConditionMarketLow
Near Mint$3.70$5.18
Lightly Played$1.69$2.99
Moderately Played$2.19$3.48
Heavily Played—$2.69
Snapshot as of 2026-10-27. Live prices & recent sales load below.
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Card details
          
          Mana cost7
          TypeInstant
          
          
          
          
          SetMirrodin
          Number30
          RarityInstant
          Released2003-10-03
        Oracle textAffinity 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.
Illustrated by Greg Hildebrandt
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Assert Authority price & value

Assert Authority

Card details

Oracle text

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More by Greg Hildebrandt ↗

Condition	Market	Low
Near Mint	$3.70	$5.18
Lightly Played	$1.69	$2.99
Moderately Played	$2.19	$3.48
Heavily Played	—	$2.69