Assert Authority
{5}{U}{U}
Instant
U
Lowest price · All printings
$0.49
Any condition · All stores · Oct 17, 2026
Market
—
Listings
9
1 printing · 3 stores
| Store | Printing | Finish | Cond. |
|---|
No listings match these filters.
Prices as of Oct 17, 2026 at 5 AM ET. Stock moves fast, so confirm on the store's page.
| Set code | Set | Rarity | Listings | Lowest today | |
|---|---|---|---|---|---|
 |
MRD-30 | Mirrodin | Uncommon | 7 | $0.49 |
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.