Assert Authority 
Instant
Oracle text (EN)
Instant
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.
Printing details
- Set
- MRD · 30
- Rarity
- Uncommon
- Language
- EN
- Artist
- Greg Hildebrandt
- Released
- 2003-10-02
- Prices
- €0.23 · $0.36
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 31, 2026 | €0.23 | €0.53 |
| October 30, 2026 | €0.24 | €0.53 |
| October 29, 2026 | €0.17 | €0.53 |
| October 28, 2026 | €0.19 | €0.52 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low – trend €0.23 30-day avg €0.18 | low – trend €0.97 30-day avg €0.77 |
| CardTrader (EN) | NM from €0.53 with Zero from €0.53 | NM from €2.79 with Zero from €2.79 |
| CardTrader (any language) | NM from €0.19 | NM from €1.10 |
Cardmarket updated Nov 1, 2026 · CardTrader updated Nov 1, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Not legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Not legal
- competitivebrawl Not legal
- duel Legal
- future Not legal
- gladiator Not legal
- historic Not legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Legal
- premodern Not legal
- standardbrawl Not legal
- timeless Not legal
- tlr Not legal
Rulings
No rulings for this card.