Assert Authority
Instant
MRDMirrodin#30uncommon
- Finishes
- Nonfoil · Foil
- Border
- black
- Frame
- 2003
- Pull rate
- about 2 per booster–1 in 2053
- Illustrator
- Greg Hildebrandt
- Found in
- Mirrodin Theme Deck Bait and Bludgeon · Mirrodin MTGO Redemption · 3 more
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 
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.
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:
Counterspell
Market · per finishspark updated 47m ago · prices as of 2026-08-30
TCGplayerFinish
Market
Δ 30D · Trend
Low
Buylist
Buy / Sell Gap
Buy
Nonfoil
$0.28
+7.7%
Since Feb 2024:H $0.28L $0.20$0.09
$0.05
$0.04+44% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Foil
$3.57
+4.1%
Since Feb 2024:H $3.57L $1.80$1.30
$0.75
$0.55+42% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Cheapest playable copy$0.28· across 1 printing· you're viewing it