Assert Authority #30 – Mirrodin (Uncommon)

Magic: The Gathering · Mirrodin · Uncommon

Assert Authority #30 Price

Assert Authority (#30, Uncommon) from Mirrodin is worth $0.31 to $3.70 in Near Mint condition on TCGplayer as of October 3, 2026, depending on the printing (Normal to Foil). On Cardmarket, Europe's main marketplace, the Foil sells for €1.07.

Near Mint · TCGplayer: $3.70
Near Mint · Cardmarket: €1.07
30-day change: +3.6%
Printings: 2

Scan it with TCG Vault

Assert Authority prices by printing

Near Mint market prices, updated October 4, 2026.

Printing	TCGplayer (USD)	Cardmarket (EUR)
Foil	$3.70	€1.07
Normal	$0.31	€0.24

TCGplayer market price and Cardmarket price for Near Mint English copies. They are two separate markets, so the euro figure is Cardmarket's own price, not a conversion of the dollar one. Source: TCGplayer, Cardmarket.

Card details

Set: Mirrodin
Card number: 30
Rarity: Uncommon
Released: October 3, 2003
Illustrator: Greg Hildebrandt
Type line: Instant
Rules text: 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.

Assert Authority: common questions

How much is Assert Authority #30 worth?

Assert Authority (#30, Uncommon) from Mirrodin is worth $0.31 to $3.70 in Near Mint condition on TCGplayer as of October 3, 2026, depending on the printing (Normal to Foil). On Cardmarket, Europe's main marketplace, the Foil sells for €1.07.

What set is Assert Authority from?

Assert Authority is card 30 in Mirrodin, released October 3, 2003. Its rarity is Uncommon. Illustrated by Greg Hildebrandt.

Is Assert Authority going up in price?

Over the last 30 days the Near Mint Foil price on TCGplayer moved from $3.57 (September 5, 2026) to $3.70 (October 3, 2026), a change of +3.6%. The 30-day low was $3.57 and the high $3.70.

How do I check what my Assert Authority is worth?

Scan it with the TCG Vault app on iPhone: it identifies the card from the camera in seconds and shows its current market price and price history, then keeps it in your collection so you can follow its value.