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Assert Authority
Mirrodin (MRD) · #30 · uncommon · mtg
Instant
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.
DeckSpec Pricei
Non-foil$0.26
Foil$2.39
Condition
Weighted composite · smoothed against one-off swings.
Current prices
Condition
FoilNM
| cardkingdom | $3.99 | 2026-07-24 |
| Cardmarket | ≈$0.91 | 2026-08-08 |
| TCGplayer | $3.43 | 2026-08-08 |
Non-foilNM
| cardkingdom | $0.35 | 2026-07-24 |
| Cardmarket | ≈$0.33 | 2026-08-08 |
| MTGO | ≈$0.03 | 2026-08-08 |
| TCGplayer | $0.27 | 2026-08-08 |
Non-USD sources (e.g. Cardmarket, EUR) are shown converted to USD at €1 ≈ $1.15 — indicative, not an exact quote.
Prices update daily · last checked Sun Aug 09. Indicative, not offers — how we price.
Price history (last 180 days)
Condition key
NM Near MintLP Lightly PlayedMP Moderately PlayedHP Heavily PlayedDMG Damaged
Recorded prices are Near Mint; LP–DMG are estimated from standard hobby multipliers (foils discounted more steeply) — a guide, not a market quote.
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Complete the set — Mirrodin
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