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Assert Authority

{5}{U}{U}

Instant

MRDMirrodin#30uncommon

EDHREC #12,344

Finishes
Nonfoil · Foil
Border
black
Frame
2003
Illustrator
Greg Hildebrandt
CommanderLegalModernLegalStandardNot legal
Format legality

Constructed

StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal

Commander

CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersNot legal

Arena

AlchemyNot legal
HistoricNot legal
TimelessNot legal
BrawlNot legal
Standard BrawlNot legal
Competitive BrawlNot legal
GladiatorNot legal

Other

PremodernNot legal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardNot legal
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.
Plays as:
Discounted SpellCounterspell
Market · per finishtrend updated 5h ago · prices as of Oct 15, 2026
Nonfoil$0.33+10.0%
$0.08 low-$0.16 gap
Foil$3.70+3.1%
$1.30 low$0.70 gap
Cheapest playable copy$0.33· across 1 printing· you're viewing it

Price history

last 30 days · set by the window above · each finish on its own scale
Nonfoil$0.33+10.0%30D
30D range$0.30to$0.33Since Feb 2024:H $0.33L $0.20
Foil$3.70+3.1%30D11× nonfoil
30D range$3.59to$3.70Since Feb 2024:H $3.70L $1.80

Other printings

1 totalCompare all printings

Found in

5 productsRounded odds

  • Mirrodin Theme Deck Bait and Bludgeon

    Deck · —

    Nonfoil 2× includedFoil —

  • Mirrodin MTGO Redemption

    Box Set · —

    Nonfoil 1+ copiesFoil —

  • Mirrodin MTGO Redemption Foil

    Box Set · —

    Nonfoil —Foil 1+ copies

  • Mirrodin Tournament Pack

    Limited Aid Tool · $100.62

    Nonfoil under 25%Foil under 1%

  • Mirrodin Booster Pack

    Booster Pack · $38.64

    Nonfoil under 10%Foil under 1%
Open in:ScryfallTCGplayer(affiliate)EDHREC